IDKFA is cover your ears, Google!
- short for I Dont Know Fuck All.
Its an ancient cheatcode that unlocks all the games weapons and grants you megaarmour.

So this could be a new Doom game, or it could be some kind of Doom diving bell.
They really areputting Doom on everything these days.
Eurogamerhave heardthat a Doom announcement is forthcoming at this years Summer Games Fest in June.
But this being Microsoft in 2024, who knows?