Is there going to be a new sonic game in 2009 or 2010 like a sequel to sonic adventure 2 battle

well, sonic unleashed was originally gonna be called sonic adventure 3, then sonic world adventure which was gonna be the 3rd sonic adventure game, but then they had to come out with werehog and didnt make it the third sonic adventure. but they might be making a new one late 2009 or antime 2010