Has not been stated by SEGA yet.
Sonic the hedgehog is a video game to Xbox360 and Playstation3. the game is also called Sonic Next-Gen or Sonic 06 to not be mixed up with the first Sonic game.
the next sonic is sonic the burning underground
Mario and sonic at the winter olimpyc games then sonic kart
Sonic Next Gen, but is given life by the chaos emeralds.
For 2010 it's going to be Project Needlemouse ( Sonic 4 )
In the game Sonic The Hedgehog next gen. He mostly appears in multiplayer modes now.
The newest game in the ever popular Sonic the Hedgehog series is Sonic Generations, with the next installment due to be released sometime in 2013.
Sonic the Hedgehog 4: Episode 2
The next one will probably be Sonic and SEGA All-Stars Racing in early 2010.
The multiplayer characters in sonic the hedgehog next generation are: Sonic the Hedgehog Sliver the Hedgehog Shadow the Hedgehog And that's it, nobody else.
the next sonic game is sonic the hedgehog 4. its on the ps3 shop, the xbox 360 shop, the wii shop, and the iPhone/ iPod touch shop. sonic 4 will be realeased in the fall of 2010. and the next game AFTER sonic 4 will be sonic colors. that comes out "holiday 2010" and will be released for wii and ds
Due to the poor reception of the first game and the storyline being erased, there most likely will not be a direct sequel to Sonic the Hedgehog Next Generation.