"The father of the Halo series, Jason Jones, is extremely interested in working on the Nintendo Revolution, according to the latest issue of EGM. This hasn't been made public it seems because Microsoft has kept the interview hidden from the public. In the interview Mr. Jones talks about a FPS on the system and some of the great ideas he had for it. "
If Microsoft has Jason Jones by their little finger then he probably won't be allowed to make games on other platforms besides Xbox360. However, if he has these ideas about how a FPS game would be on Revolution I'm sure he would find a way to make it if he really wants to do it. If he does make a FPS on Revolution I hope it would be better than Halo(too slow).