Telltale games released a new trailer for The Wolf Among Us Episode 3: A Crooked Mile today, replete with spoilers. The upcoming episode does not yet have a release date, but given that the new teaser is being called a launch trailer, we can assume it will be out very soon.
As mentioned, there are some spoilers in the video, so watch at your own risk. It's nothing that gives away the exact plot, but merely seeing parts of the trailer may ruin some things you would have liked to surprise you in the game.
That said, if you've played the previous episodes and aren't super sensitive to spoilers, it might be worth a watch to get you excited for the release. It looks like the episode will be a good one, and it teases just enough details to get you into the upcoming events without giving it away.
Telltale has been on a roll since making a name for itself with the fantastic Walking Dead game which, like The Wolf Among Us, focuses on narrative-driven choice-based gameplay. Telltale has done a great job immersing you into these established worlds with its own characters and plots, letting the decisions you make determine how the events play out and how other characters feel about you.
They are currently working on the exciting prospect of a Game of Thrones title, which will also focus on unique characters and its own story (but takes place at the same time as the TV and book series), as well as a joint Borderlands venture Tales from the Borderlands with the franchise's creators, Gearbox.