Shakeup on the flashbacks and flashforwards will make it so you won't know when events are happening.
The castaways on the raft with Faraday are kaput. Faraday's probably not.
The immortal Richard Alpert will be seen barefoot in the very near future.
Vincent the dog survives 'til series end.
Oh, and the island did not jump.
That's as much as they'll let you know about Lost Season 5.
That ain't much.
But with no more Wire coming, January can not come fast enough.