The new Sonic game for 3DS has finally been confirmed as the 20th Anniversary birthday project, Sonic Generations.
Update - First details from Nintendo Power:
The first details from the magazine note how the 3DS version will be taking a slightly different approach from its bigger brothers, but still keeping the concept of classic and modern sonic working together.
Original Story:
A version of the much anticipated 2D Sonic revival has been strongly hinted at for 3DS in Sega's listings, but was since removed. Spanish Nintendo magazine Nintendo Acción magazine mentioned that there's a new 3DS game within the Sonic franchise, but didn't go into much detail.
Finally the cover of an upcoming issue of Nintendo Power confirms Sonic Generations for 3DS. Not much else is known though, like whether it would be a similar 2D/3D concept or something completely different for a portable Sonic game.
What would you like to see in the Sonic Generations game for 3DS