Diablo 3 lead producer Alex Mayberry told Videogamer this morning.
"I don't know where we are with Microsoft right now so I can't really comment on what that contract looks like," Mayberry said. "The point is we are developing for Xbox [One] and PS4 simultaneously. We hit those major platforms and then our goal as a development team is to make them run."
Diablo 3's upgraded Ultimate Evil Edition was previously announced as a PlayStation 4 exclusive. Blizzard notes that the upcoming port will feature content from this week's forthcoming "Reaper of Souls" PC expansion, along with expanded social features and a redesigned interface suited for consoles.
Mayberry explains that cross-platform development is standard practice for Blizzard's console ports. "We have that pipeline worked out," he told Videogamer. "We've already done it with the 360 and PS3, so that team knows how to develop at the same time for both of those platforms. That's just what we do. And then Blizzard and Microsoft can work out whatever they work out."