You heard(or read) right! Jason Grifith is no longer the voice of Sonic. Roger Craid Smith is! Here's a demo of the new voice: http://www.youtube.com/watch?v=fp7M7QrKzr8 .
I really like it! What do you think?

I really think the first try sucked. However, when he advertised the Sonic Spinball in the Alton Towers Resorts, I think he did really good. I hope to hear him sound that well in Sonic Colors!

I'm also pretty confident that he'll do well since he was Chris Redfield in Resident Evil 5.

Aw..... I perfer the other voice. This guy just makes Sonic sound more like a cartoon character and less epic.... I dislike. Jason Grifith will always be the best Sonic voice actor in my opinion. Sorry, but Sega, PLEASE BRING JASON BACK SOME TIME. As for that, goodbye Jason.

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er.... I personally think his old voice fit him better. In fact, I think Steve Urkel did a better job 0_0'