Microsoft is basically dead (has been but people pretend that there is still a chance) with them out who will take the top spot, and how will this change the landscape of the industry?
The things to look out for is how the console market shifts and who becomes top dog, and how third parties (especially the Jap ones) will act. Will they try to pick sides, or will they just go along with things? Back in the day they could shift market forces and actually get people to buy consoles now I don't see that being the case, but I could be wrong.