SEGA announced via a trailer for the arrival of Sonic the Hedgehog 4: Episode II , following the eponymous Episode I released on Live Arcade over a year ago, in October 2010. The title will introduce many new features: in addition to a new graphics engine and physical, in the game Sonic will the faithful Sidekick Miles "Tails" Prower which will help him to defeat the evil Metal Sonic. The title will probably still as Live Arcade game, in the course of 2012; below the video.

Sonic the Hedgehog 4: Episode II-Teaser trailer | HD Version