1) We will learn "exactly" what happened to Michael between leaving the island and him getting to NYC.
2) Michael is a "pivotal" part of the end of the season and he will have an "impact" on many of the characters, including Sayid.
3) We will see how the Oceanic 6 "escaped the island" and what happens to those that don't leave.
4) The Team Locke v Team Jack debate about who is right will "amplify"
5) We will learn who is in the coffin
6) More about the freighter people
7) We will also find out who "seemingly killed" Karl and Rousseau
also been confirmed that we will c smokey again this season
"Everything Happens For A Reason." John Locke
"Guys, where are we?" Charlie Pace
'They're not the survivors they think they are' Promo Guy
'Sawyer Is My 'Constant'