Some timed exclusive agreements are fairly short. A game will drop first on Xbox or PlayStation, then show up on the rival console usually in about a month or two. As for Dead Rising 4, be prepared to wait quite awhile.
The zombie killing selfie shooter that marks the return of Frank West back to Williamette, Colorado, will remain an Xbox One exclusive for a year after its planned December 6 release date, a Capcom rep said at the comapany's E3 booth. The game is being developed by Capcom Vancouver.
That's a long time to wait if you don't own the console. If you own a PS4, you'll have to get your zombie killing some other way until then. Or, as Microsoft hopes, you'll buy an Xbox One.