I probably missed something, and it'll already be outdated tomorrow, but these are the games I could find that were 'confirmed' for a 2023 Game Pass release. : r/XboxGamePass
How to get Xbox Game Pass Ultimate for only $5 for up to 36 months - Pureinfotech
Xbox Game Pass games, October 2023's new free titles revealed
Coming Soon to Xbox Game Pass: Forza Horizon 5, Minecraft: Bedrock and Java Editions, and More - Xbox Wire
38 best games on Xbox Game Pass (July 2023) - Polygon
Xbox Game Pass Ultimate Perks for October 2023: Apple Music, Crunchyroll, Fallout 76, and all benefits
Xbox Game Pass subscribers 2022
Xbox Live Games With Gold Gets An Extra Title In February 2021 - SlashGear
New Games with Gold for January 2021 - Xbox Wire
How To Complete All Xbox Game Pass Quests In 2023
New Xbox Game Pass Games (October 2023)
Xbox Game Pass January 2021 games list, price, EA Play, xCloud, and more
Best Xbox Game Pass deals: Get Game Pass Ultimate for cheap
Xbox Game Pass January 2021 Update: All Games Coming To Console, PC and Android
Xbox Game Pass in January 2022: Hitman Trilogy, Mass Effect Legendary Edition, and More - IGN