Hii On https://wiki.debian.org/Cloud/AmazonEC2Image/Bookworm it says
This preview AMIs are intended to allow you to start testing Debian 12 deployments and migrations before the official release occurs on 2023-06-10. While the changelog at the bottom mentions - *2023-06-12* - Official Debian 12 release AMIs published First part probably needs updating... Thx Dick