By Ruby

From spoilerfix.com

Episode 5.06: Title Unknown Airdate: Winter 2009

10/27 - Lance Reddick (a.k.a. corporate recruiter Matthew Abaddon, as
well as Fringe's Phillip Broyles) was just spotted in Hawaii shooting
what I assume is episode 5.06.
Episode 5.07: Title Unknown Airdate: Winter 2009

10/27 - Hal: 70s, Caucasian. Successful, handsome and charming rogue with
a twinkle in his eye. A guy who can still fight the establishment and
win. May recur. Mike: 30s-40s with Czech accent. A scientist. Very
intelligent and creative. He's excited to show his boss his latest
discovery. Has worked hard and knows he's on the brink of something big.
Vicki: 30s-40s, any ethnicity, attractive. Charming, coy and knows how to
get what she wants. Has spent a lifetime in bars and can read a guy
better than he knows himself. Rupa: 20s, Indian (South Asian), pretty.
Sweet, fun-loving professional young woman who can be tougher than she
appears. Can deal with difficult customers with charm and ease. Nandi:
Male, 30-35, Indian (South Asian) he's smart and professional. He's used
to working with difficult and annoying people, so he's developed a kind
but firm demeanor. 10/27 - Sawyer and Juliet are fine. Faraday comes
ashore, and he appears to be insane. He says he is from the past and not
the future. Charlotte and Miles are fine as well. Charlotte does her best
to keep Faraday calm but he keeps saying crazy things. These five are
together until the attack.

10/27 - Remember Desmond's all-knowing and slightly creepy friend from
two seasons ago? The one played by the sublime Fionnula Flannigan? Well,
according to my Lost moles, she is coming back this season, and we will
learn that she has a very surprising connection. To another character. A
major character. And the connection? It's a big one. That's all I'm
saying. 10/27 - I'm told there's one off-Island Dharma station in
Australia, and I personally love and believe your guesses were right: The
station is specifically in or around Ayers Rock/Uluru, the place Rose and
Bernard visited on their honeymoon. 10/27 - "My character starts
explaining to Locke the mysteries of the island," says Nestor
[Carbonell], who denies his character is actually the all-powerful Jacob.
"There's a phenomenal twist." Mysteries from Charlotte 's past will shed
further light on the island's history. "It appears I've come back to the
island to look for my birthplace," says Rebecca [Mader]. Last season,
viewers saw her in a Tunisian desert studying the remains of a polar
bear. [Carlton] Cuse says viewers will soon learn why she's trying to
find the island's bears - and confirms the Tunisian skeleton belonged to
one of them. "We've seen several bear cages," [Damon] Lindelof says. "But
none of the polar bears are accounted for."

From http://forums.delphiforums.com/startrek/

After the apparent deaths of three characters in the fourth season finale of Lost, and subsequent the announcement that two new characters would be added to the fifth season cast, fans might think they could predict who would appear and who would be left out of the new season. Reports leaking from several sources suggest things may be more complicated than fans expect though. At least one character who was apparently unharmed at the end of the last season won't appear in fifth season, and another minor character who was killed in his first appearance will return for several episodes.

Since the presence or absence of certain characters could be regarded as a spoiler, don't read any further if you want to be completely in the dark about the upcoming season of Lost.

In an interview with Scifi.com, Doug Hutchinson, who played Dharma physicist Horace Goodspeed, revealed he'll be returning for at least four episodes in the upcoming season. Goodspeed first appeared in a third season flashback where it was revealed he was present at Ben's birth, and later died in the Purge. Goodspeed returned in an odd vision/dream of Locke's during the fourth season where he claimed to have built Jacob's cabin. Given that Goodspeed had been dead for over a decade prior to the crash of Flight 815, it's unclear how he'll be appearing in the fifth season.

"I don't know what's going on," Hutchinson told Scifi.com. "Nobody knows what's going on on that island, but I'm either a ghost or a memory, a figment of one's imagination or a piece of the island. I could be I'm conjured by the island." Hints dropped by Lost's producers that Daniel Faraday is involved in events in the island's past have led to fan speculation that a significant portion of the upcoming season will take place in the island's past, long before the crash, and that Goodspeed will appear in those scenes.

As for other characters, it appeared that both Michael and Jin died when the freighter exploded. While Harold Perrineau Jr., who played Michael, is no longer with the show, Daniel Dae Kim, who plays Jin, has been shooting in Hawaii and apparently remains a full member of the cast. Likewise, while Locke was revealed to be the person in the casket during the flashforwards, Terry O'Quinn remains a regular member of the cast. Also returning from the dead, but only for a single episode, is Michelle Rodriguez as Anna-Lucia.

However, Emilie de Ravin, who plays Claire, has revealed that she won't be appearing in the series at all during the fifth season, though she expects to return for the sixth, and final, season of Lost. Claire was last seen in Jacob's cabin with her (and Jack's) father, Christian.

You can find Scifi.com's entire article on who's in and who's out of the upcoming season of Lost here:
http://www.scifi.com/scifiwire/index.php?category=0&id=60612

Source: Beaming Beeman LOST

Episode 5.01: Because You left (Season premiere) Airdate: Winter 2009

09/28 - We will come to learn that one of the following is true in Lost's
fifth season premiere. A. The Island moved forward in time. B. The Island
moved backward in time. C. The Island did not move in time, but it did
move in space -- to another location on the planet. D. The Island did not
move in time or space -- it's still there, but Dharma tech renders it
invisible to the naked eye. Source: The Ausiello Files 09/18 - First scene
we saw had Sawyer, Bernard, Rose, and Juliet. They appeared to be having a
conversation in the jungle. Second scene had Charlotte and Miles, going
back to camp. We watched for about 90 minutes. According to one of the
crew, it was for Episode 5.01. Source: The Transmission 08/24 - Foreman:
40s to 50s, any ethnicity. A blue-collar construction worker. He's worked
hard to get where he is and provide for his family. He cares deeply for
his crew, hates it when management is condescending and arrogant but
ultimately knows his place in the pecking order. Co-star. Martha:35 to 40,
Asian, attractive. A smart, capable scientist with a strong personality
who has taken a break to raise her baby but plans to work again.
Completely believes in the work she is doing but sometimes questions the
decisions of those in charge. Co-star, recurring. Dan: 40s, any ethnicity.
A high-priced attorney, someone really sharp who can be friendly. However,
there's a real menace lurking below the surface. Recurring guest star.
Source: DocArzt's Lost Blog 08/24 - Hurley and Sayid drive into the
apartment complex parking lot in a late-model blue SUV. (It and the other
cars have California plates.) They exit, Sayid looking sharp in a black
shirt and dark khaki pants, Hurley wearing a thick, long, grey bathrobe
over a blue T-shirt. Hurley's also holding a big burger and paper cup.
They make their way stealthily up the stairs, and walk the length of the
building, past several apartments. They work their way up to the top
floor, Hurley eating the whole way. Finally they reach the apartment
they're looking for. They confer for a moment. Sayid seems to reach for
the top of the door, looking for a key, perhaps, when something startles
them. Sayid pushes Hurley aside, and draws his gun, pointing it at the
door. It opens, and there's a struggle inside. The next moment, Sayid
throws a man over the railing to the asphalt four stories below. There's a
second man inside. Shots ring out. Hurley emerges from the apartment, gun
in his hand, and looks over the railing in disbelief. Looks like Sayid is
introducing Hurley to his new career. Source: The Transmission

Episode 5.02: Title Unknown Airdate: Winter 2009

08/30 - Cunningham: Mid-20s to Early 30s. Any ethnicity. Athletic, used to
living outdoors and off the land. He is a loyal soldier but willing to
compromise with the enemy to protect his men. This role is introduced in
502 and has scenes in 503. Source: DocArzt's Lost Blog 08/25 - Michelle
Rodriguez [...] is returning to the show this season, multiple sources
confirm. [...] Rodriguez is back for one episode, most likely this
season's second. [...] The fact that Cheech Marin is also on the guest
list for eppy 2 suggests that it's most likely a Hurley-centric outing.
And after his encounter with Charlie's ghost last season, it's certainly
feasible that Hurley would have an imaginary run-in with Ana Lucia.
Source: The Ausiello Files 08/24 - Nigel: British, in his late teens.
Despite being rough around the edges, mature well beyond his age and
extremely smart. Must have English accent. Nice co-star. Will appear in
episodes 502 and 503. Darlene: Early 20s, any ethnicity. A bored clerk who
hates her sucky job and looks for any burst of excitement to get through
the shift. Alternative in dress and style, plays guitar in her own band
but needs the day job to pay the bills. Co-star. Jill: Late 20s to late
30s; any ethnicity. A butcher who is one hard-as-nails cool chick. A
tomboy, bit of a searcher, and highly competent beyond her station in
life. Co-star. Source: DocArzt's Lost Blog

Episode 5.03: Title Unknown Airdate: Winter 2009

09/18 - When action was called, Henry Ian Cusick raced into the heart of
the bustling marketplace. Desmond was out of breath, sweaty, wearing an
unbuttoned maroon paisley shirt rolled up to his elbows, light khaki
pants, and blue canvas shoes. He was clutching a piece of paper, reading
it, then scanning the crowd frantically. He called out a name, over and
over, stopping and saying it to perplexed faces. He was looking for
someone, but losing hope. Try as I might, I couldn't make out the first
name. Althea? Theone? Was it a man, a woman, a child? From context, I'd
guess it was a male name. But the last name was clear as day: Salonga.
Source: The Transmission 09/18 - In Kaimuki, they were filming at the
corner of 9th and Waialae Avenue . It is an accident scene where Hurley
(stunt double was driving) speeds down the street and knocks over some
boxes on the sidewalk before driving off. He's being chased by someone
you'll never guess... Ana-Lucia in a police car. She was in the car the
whole time, so I couldn't 100% confirm it was her but I'm pretty sure. I
just don't want to speculate and be wrong. She had HUGE glasses on. I'm
guessing flashback or hallucination. I should add that the stunt guy was
wearing hospital type garb, so that's why I think it is in the present.
Source: Lost Spoilers 09/17 - Solanga: Male, 50s, Filipino. The village
doctor in a small, rural community. Has his vices but also genuine medical
skills. Speaks relatively good English with an accent. Janitor: Male, late
40s or 50s, must have a British working class accent. Nosy, opinionated,
resident rumor monger of a school. Knows everyone's business and can't
keep a secret to save his life. Abigail : Female, 30s, British; working
class. Stoic - but deeply wounded. Has a way with bitter sarcasm, though
she's a loyal caregiver at heart. Theresa: Female, 30s, British, blonde.
Pretty suffers from dementia but also has short periods of complete
lucidity. Source: DocArzt's Lost Blog 08/24 - Sophie: British and in her
late teens. Is a seemingly innocent, prim and proper aristocrat but in
actuality she hides a toughness and ingenuity underneath. Must have
English accent. Nice co-star. Will appear in episode 503. Source:
DocArzt's Lost Blog

Episode 5.04: Title Unknown Airdate: Winter 2009

10/02 - Sawyer, Juliet, Daniel, Miles, Charlotte, and ***** will learn
Jin's fate at the precise moment we do: in episode 4. In other news, ask
yourself this question: Why was Jorge Garcia shooting a scene in jail
last week? Source: The Ausiello Files
09/30 - They're going to make us sweat out the fate of Jin. We won't see
him at all for the first three episodes, and it's not until episodes four
and five that we'll really understand what happened to him when the
freighter exploded. [...] I'm now hearing from sources that Jin will be
found Leo DiCaprio-in-Titanic style, floating on a door. Alive or dead?
Source: Kristin on E!Online 09/28 - Dr. Evelyn Ariza: 30s-40s, any
ethnicity. Chief of staff at a hospital. She's attractive with a great
bed-side manner but tough and carries her authority well. Not afraid to
make difficult decisions. Source: Lost Spoilers

Episode 5.05: Title Unknown Airdate: Winter 2009

09/17 - Brigitte: Early 20s, Caucasian, French. Pretty and self-reliant.
Works as a waitress in an up-scale restaurant in Tunisia and meets a
mysterious stranger. Must speak French. Source: DocArzt's Lost Blog

General spoilers:

10/02 - Lost rolled up to Hawaii Medical Center West, a.k.a. St. Francis,
in Kalihi (just up the street from Hoffs Drawler and Simon's Butcher
Shop) today. Parked in front, Jack's Ford Bronco, a blue cargo van with
"Canton-Rainier Carpet Cleaning" emblazoned on the side, and a Los
Angeles Paramedics ambulance. Matthew Fox, Naveen Andrews, and Michael
Emerson are on the scene. Jack is on the phone as action is called. He
learns that someone, or something, is somewhere else, and they need to
get there "right now." Jack jumps into his truck, but Sayid and Ben hang
back a moment to have an intense conversation. At one point, to adjust
for a dip in the grass, Naveen Andrews stands on some sandbags to meet
Michael Emerson eye to eye. Eventually, Sayid takes the wheel of the blue
van, and Ben climbs into the passenger seat. They drive off. Source: The
Transmission 10/02 - Ben's mission has changed, time has passed, he has
different resources... and he moves around a lot. Source: TV Guide Online

09/28 - We can confirm that Sterling Beaumon, who played young Ben in "The
Man Behind the Curtain", will be reprising his role again in Season 5. No
details yet as to which episode he will be appearing in. [... In an
upcoming episode,] Desmond and Penny have been flying under the radar for
awhile and they're having a kid. They move around every few months and in
this episode they are in a city named Mati. Ben is hot on their trail. Ben
tortures someone from the Widmore Group. We find out that there are a
handful of Dharma stations located throughout the world. They are not just
on the island. [...] One of these 8 will die in the first 5 Episodes of
Season 5: Juliet, Rose, Sawyer, Miles, Charlotte, Penny, Richard, Frank.
Source: Lost Spoilers

 

From Entertainment Weekly

The season premiere's script is entitled "Because You Left", and it's said to feature two new characters, both recurring at first with an option to become series regulars in season 6.

First up is Ceasar, a physical brainiac between the ages of 35 and 45. Although his intentions are unclear, he's as good at winning people over as he is at knocking them off.  The other newbie is Ilanna, a European in her late 20's to early 30's, who is also as intelligent as she is dangerous. She too is a charmer who's used to getting her way. At press time, actors had yet to be attached to either role. 

from http://spoilerfix.com

General spoilers:

07/12 - John Terry (Christian) and Alan Dale (Widmore) are in talks to
return next season on a recurring basis. In the fine print of both their
contracts, it states that Lost has the right to pick up series regular
options on both actors for the show's sixth and final season. Source: The
Ausiello Files

06/12 - Jin is gonna be fine. I suspect that the difference between
Michael's and Jin's survival is that Michael was trapped inside the hold,
whereas Jin being up on the edge of the deck meant he had a chance to be
blown clear of the ship. Emilie de Ravin will be on a holding contract
with Lost for season five and returning in season six. Source: Kristin on
E!Online

05/21 - A series regular who has been on the series since the
first season will not be back next season (season five). According to
inside sources, this person's contract has been put into a holding deal
and the plan at this point is to have him or her return for season six. It
is not Jack or Sawyer. It's a she. Remember how I told you that time
traveling and teleporting is most definitely happening? Well, let's just
say that it's going to be happening on a much larger scale in the coming
seasons. Source: Kristin on E!Online

05/10 - Carlton Cuse and Damon
Lindelof reveal: [Time travel definitely plays a part in the series...]
You will learn a lot more about Richard Alpert as the show goes on. He is
going to become more prominent in the future of the show. Source: Kristin
on E!Online

05/07 - Sawyer doesn't die. He's alive. On the Island. [Locke
is alive on the Island in the future.] Source: Kristin on E!Online

You can see many spoilers at http://spoilerslost.blogspot.com/ and http://www.spoilerfix.com/lost.php and http://www.thetailsection.com/