The anticipated title for Stadia Sekiro: Shadows Die Twice is coming to Stadia on 29th October. This was confirmed in a blog pos and comes in with the new DLC which is coming to the the other platforms as well.
With this confirmation of the date this should sit well and will add to another game to the packed Stadia schedule for the fall period. Also interesting to note was that the game is being published by Activision. This would be their first game and could open the door to more of their games coming to the service.