Larian Studios' CEO and the director of Baldur's Gate 3, Swen Vincke, revealed that the RPG will be launching on Xbox Series X|S before December, as the team is “actually very close” to having the game ready.
Very specifically the quote from the Interview was, "It's 2023. And 2023 is narrowing, so it's already pretty precise in my book. Between September and November... So, as fast as we can honestly," Vincke said.
Sources
Article CEO interview with IGN