If there is a season 3 I think it will center around Clem raising the baby. Or maybe there will be a HUGE time jump to when the kid is Clem's age and we play as him, but no version of TWD has gone that far into the future so it would be bold. Either way I think the main decision next episode will be what we name the kid (we pick from either Duck/Kenny Jr., Lee, Alvin, or maybe Omid), and if there is a season 3, that could have huge implications because its what everyone calls him for the entire season, which would be really cool.
I doubt the story will center around Clem raising the baby. If the story was supposed to be about Clementine raising a baby then Christa and Omid's baby wouldn't have mysteriously disappeared. My bet is it'll center around Clementine and Jane. Least that'd be cool rather than just having another new group.
Well, i don't think we will get The walking dead(telltale game) season 3 until October 2015 at the earliest, depending on when Tales from the boarderlands and Game of thrones are done their first seasons. We may also get The wolf among us season 2 around the same timeframe.
I really want a Season 3! I swear, but I know S2 hasn't been as AWESOME as S1, but still, it's great! and playing as Clem in S3 will be awesome, a 15 years old Clem maybe? I don't know, but I wanna keep playing as her, I mean, she is a really good survivor, she can make it, and if Christa doesn't appear in the season finale, maybe S3 could be the place, something like Beth in S5 of the TV Show, why not (: but I want Christa back :( and maybe the 400 days characters could re-appear. But if they confirm a S3 i'm gonna be so so happy, I hope still as Clem.
I doubt it'll end on only two seasons. Though I think that season two was largely dependent. Rather than being a chronological successor with linked story to season one, its really just a long epilogue, though it is redeeming itself int he more recent episodes.