In an interview with IGN, one of the writers for The Walking Dead, Gary Whitta, confirmed that season two is on the way and that they will also be releasing "something extra" while we wait.
"I can tell you what you already know, which is season two is coming. There’s not much to say because it really is very early…it’s a way off. But, knowing that it’s a way off, and knowing that people are hungry for more walking Dead…there may very well be more Walking Dead from Telltale before season two. We may have a little something extra for you between season one and two."