"Sonic Rush Adventure" on the cards?

Sega patents title but keeps quite on whether the game exists

Sega has patented the title Sonic Rush Adventure but has so far refused to comment on whether a game actually exists.

According to a post on a Sega message board, the patent was filed for on April 2. There's nothing else to go on except the fact that with 2005's Sonic Rush DS game being considered the best Sonic title for years, Sega would be mad not to follow it up. And it has almost been two years...

It's by no means confirmation but it's a start. Stay tuned.