Probably due to a glitch at Apple, some users are receiving alerts to update from the iOS 9 beta. Unfortunately, for those that try there is no update to download ahead of the September 9 event.
Windows 11 22H2 build 22621.160 (RTM) gets File Explorer Tab navigation
tabbed file explorer
Windows 11 in the Dev Channel fixes Windows Security app issues, and more
windows 11 insider preview