It was revealed at a panel in San Diego Comic-Con that Clementine will be showing up in some way, shape, or form in Walking Dead Season 2

Also mentioned at the panel was that we would find out what happened to Kenny, Lee's off and on buddy, in Season Two. No word if Clementine will be a playable character or if any of the characters in Walking Dead: 400 Days will play any role in Walking Dead Season 2.

Walking Dead Season 1 was one of the only games to turn me into an emotional wreck. I'd like to say that caring for Clemetine's well being was the reason behind that. I'm hoping Season 2 will have us in the boots of an older bad ass Clem. Fingers crossed.