Despite the Tails Calendar page which says the release will now be on 2022-11-22, the files appear to be uploaded already. This is an UNOFFICIAL REPORT.
Often Tails images have appeared on mirrors a day or more previous to the official release date, which seems to be the case here. While I recommend waiting for the official announcement, I couldn’t help but share this discovery.
 Tails - Calendar
@Kernel.org - Index of /tails/stable/tails-amd64-5.7/
@Wikimedia.org - Index of /tails/stable/tails-amd64-5.7
- Edit: removed duplicate link & added Wikimedia link