The Walking Dead Season 2 from TellTale Games is now available to preorder on Steam for $22.49/£17.09 and is already number one on the Steam Top Sellers list.  With the option to preorder comes more information, screens, and elsewhere (above) a teaser trailer that is definitely worth a watch. The game description on Steam confirms:

"The Walking Dead: Season Two continues the story of Clementine, a young girl orphaned by the undead apocalypse. Left to fend for herself, she has been forced to learn how to survive in a world gone mad."

Both the screens and teaser show a visibly aged and slightly tougher looking Clementine in a variety of perilous zombie related scenes; but then most zombie related events are perilous.  They also show a backpack wearing survivor struggling with a walker (the backpack wearing silhouette from the end of the first season?), and Clementine sitting at a table with another becapped male survivor.

The first season was enormously successful despite suffering from many post release bugs that affected all platforms the game was released on. Season 2 has yet to set a release date for the first episode, but hopefully it has lost the bugs and kept the fantastic writing that made The Walking Dead amazing despite its flaws.