Microsoft literally made up the term "AAAA Games" this week. They clearly have a renewed focus.
MS already did this backin 2012. No idea what this means internally, perhaps it's a specific metric of budget compared to what they consider AAA? Either way, it's traveled road.
https://www.gamesradar.com/because-triple-just-isnt-good-enough-microsoft-working-on-aaaa-game/