Jason Schreier will give a "little hint" about Blizzard's FPSRPG in his upcoming book about Blizzard

https://files.catbox.moe/wmu05g.jpeg

via an email i recieved from Schreier.

previous rumour:

https://www.reddit.com/r/GamingLeaksAndRumours/s/3CTVnDqagR