Verified insider eXtas1s presented on his YouTube channel an approximate list of games that will appear in the Xbox Game Pass service. They will be added in the first half of August.
By the way, the appearance of the Mafia remake has already been officially confirmed by Xbox. And before that, Call of Duty: Modern Warfare 3 was added to the July subscription.
Microsoft recently announced a price increase for the Game Pass service. Starting August 12, PC users will have to pay $12 instead of $10 per month, and a new tariff will also be available.