Well Microsoft just released Age of Empires 4, which turned out surprisingly well, best RTS since Starcraft 2. I'd say chances we're going to see anything SC3 or WC4 related only went up by this. Maybe there will even be a WoW2 finally.

About time other studios get a chance to work with Blizzards IPs, they did well creating all those beautiful universes, but they struggle so much making just one new game every few years.

Looks like he will stay (for now):

> Bobby Kotick will continue to serve as CEO of Activision Blizzard, and he and his team will maintain their focus on driving efforts to further strengthen the company’s culture and accelerate business growth.

>Starcraft is not going to be re-born anytime soon

you don't need to make another Starcraft game. you can use that IPs to develop different kind of game like Warcraft is used to make Hearthstone the card game.

Microsoft is buying Activision Blizzard's IPs

I presume they didn't want to pin such a big acquisition on him leaving but I wouldn't be making any bets on him still being with Microsoft in 2023.