I see MS getting a 2013 release, effectively getting another head start on Sony.
The casual box will be a great way to sell to the masses out of the gate. Hopefull it can be upgraded to the core Xbox if consumers so choosed. Even if the next Xbox will be more powerful and therefore higher in cost, its year head start will enable them to get more install base and more opportunity to lower manufacturing costs.
It will be ironic for all the graphics crazy PS3 fans to therefore have to chose between PS4 and the more powerful Xbox.