Speaking with Gamespot, Sega Digital Brand Manager, Ken Balough, revealed that Tails will be a playable character in Sonic the Hedgehog 4: Episode 2.
Feedback from fans who played Sonic the Hedgehog 4: Episode 1 has been incorporated into Episode 2. The game will run on a new graphics engine and a new physics engine. Balough says to expect "massive changes" as a result of the feedback.
Sonic the Hedgehog 4: Episode 2 will be released on Xbox Live Arcade, PlayStation Network, as well as iOS, Android and Windows Mobile 7 phone devices. It's slated for release sometime in 2012.