Over at Newsarama they posted their weekly Question and Answer piece and there was one question about Joe Madureira's new Marvel Project.
Newsarama: From "MrMxyzptlk": we know that Leinil Yu is coming to the Ultimate Universe. That is cool. But can you confirm or deny that Joe Madureira and Michael Turner will work on the Ultimates titles too?
Joe Quesada: I can do no such thing.
I know there was no solid answer but it shows that Joe working in the Ultimates Universe is a possiblity. We will have to wait until we get our hands on Wizard #168 next Wednesday (August 31st) to truely find out what Joe's Marvel project will be!