Sonic 4 was released in October.
No one knows if there will be a Sonic Riders 4.
It is unknown if there is going to be a Sonic Riders 4.
Sonic 4 was released 7th October for iphone.
Sonic 4 Episode 1 relased in 2010. Sonic 4 Episode 2 coming soon.
summer 2010
the next sonic game is sonic 4! that's a 2D game! i can't wait!
none at first it was going to be season 4 of sonic x but not any more
Yes it's coming this fall(2010)
Sometime in June
Its out now on Newgrounds.com
Sonic the Hedgehog 4(Arcade game for WII and PS3 and XBOX360) and Sonic Colors(WII ONLY!)