We don't have too long to wait to play it either. The Verge report that the game will be launching October 13th, on just about every platform under the sun. The episode is called The Order of the Stone and follows a group looking for the titular order.
Telltale said that they are going for a 80s film tone, with The Goonies and Ghostbusters being big influences.
Xbox One, 360, PS3, PS4, and PC will get the episode launch day, with mobile versions coming on the 15th. Wii U and PS Vita versions are also set to release, they just haven't been dated yet.