Coming to Xbox 360 and PS3, too, alongside previously announced PS4 version.
Reaper of Souls post-launch content updates planned, but long-term plans for franchise still being discussed.
But Blizzard can't formally confirm an XB1 release for Ultimate Evil Edition yet.
Blizzard's goal is to "bring Diablo 3 to as many players as possible".
Diablo 3 expansion gets global launch on March 25.
'Dark expansion' introduces Death and a new character class.
Kotick and partner stump up $100 million of their own money.