It definitely looks like John Cena is heading over to SmackDown during this Monday's live draft show.
One reader works at a metal etching factory based our of Ohio. He said WWE belt maker Joe Marshall brought in what appeared to be a copy of SmackDown's World Heavyweight Championship belt 'main plate' earlier in the week. Later, one of his co-workers informed him that the job would be a little tricky, as the wrestlers on the sides, and the crown/globe were cut out on seperate pieces, with the intent of having spinning capabilities.
Going by that, it looks like the World Heavyweight Championship is going to become a spinner belt, which would indicate that John Cena is jumping to SmackDown.