I think its great that Blizzard is making mobile games (Hearthstone is fantastic). However I believe they should have announced their other Diablo projects along with it (if they have any) simply because this reaction was predictable. Many Diablo fans believe this excludes Blizzard working on Diablo 4 or D3 and that the company wasted al this time not making one. This assumption may be wrong however it does in no way shape or form ease the fear. Plus Blizzard hasn't come out and said 'fans don't worry we are working on something for Diablo on the PC and its just not rdy to announce yet.