Most likely the "multiplayer" is some straight up competitive deal, like what Uncharted started doing with their later games. And that's fine, because some franchises can do co-op better than others, and I've always sort of disliked co-op that is sort of just tacked on to the main single player element. The sort where you're just some random dude that follows the main character around for no reason, and you're never in any of the cut scenes. It just feels weird.
Though I will say, if they did co-op this way, it would add quite a different spin to this new Tomb Raider's infamous attempted rape scene...
I am excited about the new Tomb Raider though. Visually it looks fantastic, and obviously I support the idea of starting fresh and coming at your established characters from a different angle. The new Lara is great so far; much more believable as an adventurer, and less of a disproportionate eye candy with guns. It seems like they're leaning for a more "Uncharted" experience, which is funny because Uncharted likely owes a lot to the early Tomb Raider experiences itself. Either way, we might get a pretty cool game out of it.
I hope everyone had a great holiday, and is gearing up for a fun (but safe) New Year's eve. I'm really excited about 2013. It's going to be a big year.