It’s been in development for quite some time I believe.
Blizzard as I knew them growing up are dead anyways.
Their Magnum opus was Warcraft 3, and Vanilla WoW was very good. Since the merger with Activision they’ve been going steadily down hill.
Overwatch was a great concept, but it has fundamental design problems and Blizzard have ruined it with bad balance decision after bad balance decision.
It doesn’t help that they forced e sports onto a game that’s inherently pretty casual in nature.