Sega (or possibly someone else) has registered at total of six domains for Sonic Adventure 3. This is sparking rumors, of a new sonic title being developed. Although some people think this is some kind of hoax. I personally don’t believe this is false, and if it ends up that way, they’re certainly doing a good job at fooling me. Rumors also point to it being a 3D Sonic instead of a sidescrolling Sonic. Do you think these rumors are true? If so what type of sonic game do you want? Tell us in the comments! -Tommy Robinson
Source: My Nintendo News

AWESOME!
cool,i hope its not a rumor,i’d love another Sonic Adventure
Me too! I love sonic! if we find anymore info we will be sure to cover it!
if it’s true, i’m feasting!
I really hope its true too.
technically Sonic Heroes is Sonic adventure 3 as its based in the timeline based a few weeks after sonic adventure 2.
but i would a new sequel to it.it better be available on 3ds!!!
yeah i hope they have it on 3ds. who knows maybe they will have it on wii u and 3ds if this is true!
I would love a 3d sonic game! I grew up playing the dreamcast era, so I hope they make SA3!!!
me too! i really want to see it!
me too! i hope you watch the nintendo direct i know i will!