First up then, try this 'advert' on for size.
The very simple message being delivered here, courtesy of Oceanic's claim of 30 years safe flying, is that the crash of Oceanic didn't happen. History has apparently been re-written, eh? Now, of course, this feeds into the cliffhanger of Season 5 regarding 'the incident' and whether the detonation of the bomb had somehow destroyed The Swan Station and so prevented the crash from ever happening.
This is what the videos are implying - that the history of the characters and events on the Island as we know them are no longer viable. Take this more amusing 'advert', for example.
So there's Hurley, apparently having been and returned to Australia without a plane crash and an Island getting in the way. Except there's a little more of a twist. . . Note how he says that he has been blessed with good luck? This is not the same Hurley that went to Australia that we saw. That Hurley was riddled and panicked by the sense that he was cursed. Not so here. Here he can't believe his good fortune and wants to tell the world about his lottery win and amazing luck.
Brow furrowed yet? Then check out this last one - the perhaps more infamous 'Kate: America's Most Wanted' clip (the quality isn't as good as this was recorded on camcorder at Comic-Con):
Here is a more overt example of how even the history of the characters before the crash of Oceanic 815 doesn't tally with what we know. She didn't kill Wayne and then get apprehended by Agent Mars and put on Oceanic - here she killed some other guy by mistake and has been on the run ever since.
You may have noticed at the end of that last clip there was a brief glimpse of the Lost Comic-Con panel, with Jorge Garcia about to step up and ask a question. I've seen the whole thing and can state that it was all scripted, humourously so, which might just be our first 'don't panic' piece of advice: they might be pulling our legs.
Just a bit of teaser fun from the Lost creators for their one last time at being able to do so before the show closes completely. I'll be honest, if I was them, I'd be tempted to do the same. Messing with the mind of a fervent Lost fan, baiting them with impossible scenarios. . . Yeah, I'd be very tempted indeed!
So let me lay out what I think. I think that history as we know it has not been re-written. As Jorge jokingly asked at Comic-Con, how could they change everything that had already happened without it being a massive cheat? Fact is, I don't think they can. But what I think these videos may indicate is that the 'new flashback' for this season might be characters receiving visions or flashes of these alternate histories or futures for themselves that may force them to consider what the Island, and being brought to it, means to them all.
Like Desmond received glimpses of a future where Charlie died numerous times after he turned the Fail Safe, maybe the likes of Jack and Kate and Hurley, being at the site of the hydrogen Swan explosion, will receive different kinds of flashes - flashes of lives they could have had, or could still have - which will inform their destiny and purpose about what life they should have. Carlton Cuse stated at the Comic-Con panel that they had a new device in mind to tell their story for the final season - with flashforwards done, and the time travel season over - and I think this 'alternaflash' (you heard it coined here first!) might just be the manner of it.
This is completely my own thought, mind - I've heard or read nothing else that could confirm or deny it. So whilst I don't think we should take the above videos too literally, I think thematically they may be a major indicator about the direction the sixth and final Season of Lost may be taking us into.
Perhaps now your brow is a little less furrowed?