It has been announced for ps3 and 360, but it will probably be download only until all episodes are out and they can do a full season disc release. I can't find a release date for console versions so I expect it will launch later than PC.
Ok so here's a quote from Kotaku today "The first new video game from the creators of the acclaimed Walking Dead games, the five-part download-only A Wolf Among Us, will be out on Xbox 360 and PC on October 11.It'll hit PS3 a few days later, according to a rep for its studio, Telltale." So there you have it. Xbox on same day, ps3 a little later. And of course Telltale always releases the 5 episodes one at a time, so there's no rush to buy the game. You'll have to wait either way.
Ps3 is October 15 just found out. And they will probably do like they did with Walking Dead and release a disc after all 5 episodes launched. For Walking Dead the first ep came out in late April and the 5th came in late November, then the disc release came mid December. So if you're waiting for disc release it'll be up to 8 months from now... I love Telltale's games, but they tend to take forever to release stuff.