So you’ve more than likely already seen what Dead Rising 3 will offer players. You either love the direction the series appears to be going with, or long for all the yesterdays where the series was bright and crazy instead of brown sludge.
Capcom Vancouver producer Mike Jones spoke with Siliconera that the decision to move the game from the Xbox 360 to being an Xbox One launch title was simply a matter of resources.
In terms of building the game, we originally developed it on PC and everything that we were doing was breaking the bank on the 360. The number of zombies, the streaming stuff we wanted to do, memory budgets for the number of environments and items and physics and all of that stuff. Our tech team partnered with Microsoft to get early specs and figure out how we were going to get it on new hardware.
The world of Dead Rising 3 is going to be significantly larger than the world of the two previous Dead Rising games. Jones mentioned that the worlds of both the previous titles could easily fit into Dead Rising 3.
[Source]