Sonic the Hedgehog 4: Episode Metal



 On the 5th of April 2012, SEGA posted a new trailer for Sonic the Hedgehog 4: Episode II which reveals that if players have both episodes, they will be able to download "Episode Metal" Content which allows them to play as Metal Sonic in both Episode I and II and also unlock 4 exclusive levels.

 So far, much isn't known about the levels. But in the trailer you can see some gameplay of the level which looks alot like Stardust Speedway from Sonic CD.