Saw this over on NeoGAF

A guy in the Sonic community, who goes as Wentos (a character from Sonic Unleashed) has become fairly popular with his constantly right insider information about the Sonic the Hedgehog series since before Sonic Unleashed. He's never been wrong, and probably is most famous for spilling the beans on Sonic Generations before it was announced.

He recently posted information about a new Sonic game, but the thing that has caught a lot of peoples attention is that on the listed platforms includes a console named, "Xbox Infinite", which could be a megaton in all of its own. He states that the new Sonic game will release November 2013 for the "PlayStation 3, Xbox 360, Wii U, PC, 3DS, PlayStation 4, and Xbox Infinite. All seven versions will be the same, except the PC, PS4, and XI versions will have higher resolutions and the 3DS version will be made by a different team. Do not worry, it is not going to be Dimps. Sega has ended their relationship with them."

http://segabits.com/forums/index.php?topic=2244.msg53963#msg53963

http://www.neogaf.com/forum/showthread.php?t=551448

while the name sounds plausible (and pretty good), I seriously doubt anyone outside of the Xbox team even knows the name to leak it. There is simply no need to provide it to devs, retailers, outlets, partners or anyone else that could potentially leak it at this point, the name is not a critical component for anyone outside of the team and perhaps those that need to stamp it on the consoles themselves.

We will know the name in 20 more days