MMOCulture is reporting that NetEase believes that its side of the development of Diablo Immortal is complete and is waiting for Blizzard to give the green light to its release. The site translated the comments made to investors during the 2018 year end call. Morgan Stanley's Alex Poon asked about the progress of the game's development: "On our side, development is already fully prepared and invested. I believe there is no issue from the side of development (with regard to launch)".
The full answer reads:
(Translated by MMO Culture from Mandarin Chinese)
With regards to the launch of Diablo Immortal, we will announce a market launch date simultaneously with Blizzard. But on our side, development is already fully prepared and invested. I definitively believe there is no issue from the side of development (with regards to a launch date).
Blizzard is (in)famous for releasing games "when they are ready" and it is possible that, with development complete from NetEase, the game is now in the hands of Blizzard for tuning or other adjustments before announcing a release date.
Read more at the link above.