They’re going to need something big to placate the Playerbase, especially the ones that fork out money to attend. “Pve as promised in OW has been canceled” is up there with the Diablo Mobile announcement in terms of player hostility. Dragonflight, while improving on issues in prior xpacs, hasn’t drawn players back like they hoped. D4 launch is TBD. Everything else is dead or just sort of there.
It’s too early for a new WoW xpac, so presumably they’ll just tease the next big content drop and try to make it more interesting. OW2 I suspect they will initiate red alert and try to have something PVE focused that looks interesting to say “see, the game will still have PVE that you’ll like!”. D4 I suspect they’ll just tease future roadmap stuff.
I put about 25% odds they announce a new game (that rumored survival game thing). If it looks awesome, that might be the win they need to claw back player interest