Xbox has announced many AAA games
Halo Infinite - look at the munkee!!
Forza Motorsport - 2-3 years away
Fable - 2-3 years away
Avowed - 2-3 years away
State of Decay 3 - 2-3 years away
Senua's Saga: Hellblade II - 2-3 years away
Everwild - probably years away, not even Rare knows what the gameplay is going to be
Age of Empires 4 - PC game so far
Flight Simulator - PC game so far
Gears 6 (likely) - ? years away, they've just released 5
InXile's AAA game - they are making Wasteland 3 and Frostpoint VR, multiplats, do they have more teams?
The Initiative's AAA (AAAA!) game - 40-people studio that never released a game will make AAAA? Maybe for next next gen
Forza Horizon 5 (Likely) - unless there's a second team, Playground is focusing on Fable
Compulsion's next project (they are staffing up to 100+ people, so likely AAA or close) - bought very recently, 2-3 years away.
And who knows what Doublefine will be doing? - Psychonauts 2, multiplatform, do they have more teams?