Batman: Arkham Origins Blackgate is getting an HD port after all. A 'Deluxe Edition' of the game is now listed on Microsoft's Xbox Games Store, complete with a release date of March 25.
The listing (via Joystiq) also shows off some screenshots that are clearly higher quality than ones from the portable versions. That would seem to confirm an Xbox 360 version at least, and rumors from a Steam database listing have hinted at it for PC as well. It seems someone may have jumped the gun, and we expect the announcement to be multiplatform. We'll update as more information becomes available.