So does this include Super Ultra Dead Rising 3 Arcade Remix Hyper Edition DX Plus Alpha?
I don't think it includes any DLC, but they're releasing it. From the FAQ:
Q. Will the download content for the Xbox One version be available for PC?
A. Yes. All four of the additional episodes released for the Xbox One version will be available to PC users. Well have more details on the release of these shortly.
The 4 episodes are part of the season pass, which Super Ultra was not. So I would not say it is coming, at least right away.