The Dead Rising bundle which brings Dead Rising, Dead Rising 2 and Dead Rising 2: Off the Record will be available starting on the 13th September 2016 according to the Xbox Store.
While Microsoft has listed the release date on its site, Capcom is yet to officially announce the release date. So while it is possible the date could change, it would be unlikely to differ from what Microsoft have listed.
The Dead Rising bundle is not currently available for digital pre-orders.
Dead Rising will release on PC, PlayStation 4 and Xbox One. Dead Rising 2 and Dead Rising 2: Off the Record will release for PlayStation 4 and Xbox One as they already exist for PC via Steam.