Earlier today out of pure curiosity I emailed the PR at Fatshark and asked them if Warhammer 40k: Darktide’s November 30th, PC release on Steam meant it was also coming to PC Game Pass at the same time. They responded :
you can play it on PC GP on release, so on you can make use of that Ultimate subscription.Fatshark PR Rep
This is the first confirmation I’ve found that while the game is delayed to a “shortly after PC” date on console it IS coming to Game Pass on November 30th.
Xbox.com describes the game as:
From the developers of the best-selling and award-winning franchise Vermintide, Warhammer 40,000: Darktide is a visceral 4-player co-op action game set in the hive city of Tertium. Fight together with your friends against hordes of enemies in this new Warhammer 40,000 experience.Xbox.com Product Page
Below is the announcement trailer. See you out there on the 30th PC players!