Converging rumors that the Administration might push back travel reopening, unlikely to happen on Nov 1st.
Challenge is logistical: airlines need a minimal prep time, as they will check/verify vaccine certificates. But delay is also due to difficulties with the policy itself.
Update re: US travel ban. Don't panic, all going ahead.
But my understanding is they've hit multiple speed bumps. Promised date of "early November" now looking unlikely, so "in November" is the current best guess; obviously reuniting families for Thanksgiving would be a bonus.