Update (07/24/16, 12:06 p.m.): Capcom has responded to our inquiry about this release date, and has noted that the date listed is placeholder and not final. The representative mentioned that more information surrounding the official release timing will be revealed in the near future.
Original Story (07/23/16, 1:20 p.m.):
Last week, after a leak, it was confirmed by Capcom that Dead Rising 1, Dead Rising 2, and Dead Rising 2: Off The Record are each coming to current-gen systems. Now, the Xbox Store is listing them to have a September 13 release date, prior to any official announcement from Capcom.
According to the listings, the three games will be available through a bundle. We can't confirm the accuracy of this date just yet, but we've reached out to Capcom and we will modify this article appropriately as soon as we hear back.
Dead Rising will be available on PlayStation 4, Xbox One, and PC. Dead Rising 2 and Dead Rising 2: Off The Record will be purchasable on PlayStation 4 and Xbox One. For more on Dead Rising, check out our hands-on with Dead Rising 4.
Considering the listings earlier this week ended up being accurate, I'd guess that this release date is likely true, too. However, we won't know for sure until Capcom responds to our inquiry. Most likely, this was simply leaked too soon prior to an official release date reveal from the publisher.