While nowadays I think not having announced it already / be actively marketing it, and the Resident Evil contract thing about game pass / services rule it out... I wouldn't be surprised if they are just not allowed to do any marketing for it until it's released, so it could be a potential "shadow drop" on pc game pass... but I don't think Sony would leave that possibility be after that RE8 leaked contract.
If it was possible though, MS couldn't probably do any marketing for it anyway. In fact, they are not advertising the pc releases in any way that I am aware of. It's like the pc version doesn't exist or isn't relevant, although we all know it exists and will release on the same day as ps5. Maybe they can't release it on any MS platform (win10 store / game pass)? And it is only coming to Steam for the first year? They could advertise it anyway, as they would get their share from those sales, yet they are not marketing it -almost?- at all. So who knows. Watch it being announced for pc game pass the day it is released or something, I dunno. Don't care, can't play on pc unless they have pc blades for xcloud already when it launches.
edit- could it be they are still figuring this out with lawyers to not fuck their contract with Sony up? Because, I know the E3 conference was titled "Xbox and Bethesda" but, come on, a lot of pc only people will also watch that and would have enjoyed a Deathloop trailer/announcement if present. Yet there was no mention at all if I'm not mistaken, so it could be just that Sony doesn't allow any info outside of PS5 regardless of it happening or not (win10/pc gp).