The public was warned by the leadership of China that they would move on Taiwan by 2027.
The previously unreported briefing was apparently held in a secure room in Silicon Valley in July 2023
I guess the "secret room" really wasn't so secret.
The suspicion that China might invade Taiwan in 2027 was never a secret in the fist place, either. Xi told Biden outright he was going to take Taiwan at a summit in 2023ish. China obviously won't give a specific date, but the tea leaves all point to 2027. You don't need to be Tim Cook or the CIA to read those leaves.