Hi Patrick, the OS platform EOL is an independent event of the Percona Software EOL. As an example, when Oracle MySQL 5.7 will reach its EOL state, Percona Server for MySQL 5.7 will be discontinued as well (unless we decide to provide post-EOL support as an option to our support subscription for customers as we did for 5.6 – but that has not been decided yet).

I appreciate the clarification: so 5.7 is EOL in October 2023, regardless of any supported OS EOL? Or would security updates continue until the OS EOL? For example with Debian 10’s extended support ending in June of 2024. The wording here makes it sound like that PS57 would be kept up to date until the Platform EOL.
https://www.percona.com/services/policies/percona-software-support-lifecycle

Hello Patrick,
As a general rule, we follow Oracle MySQL Community for platform support. When they provide a software release that supports a new platform (Debian 11), so will we. It seems that Debian 11 support was not released for 5.7 in their 3rd quarter MySQL Community 5.7.39. Therefore Percona Server for MySQL 5.7.39 would also not yet be available on 5.7.39. We follow what Oracle does on platform support lest we end up creating unnecessary duplication of efforts and difficult or impossible upgrade/sidegrade situations. If we can determine that Oracle will not offer Debian 11 support for the remainder of 5.7 series since it will be End Of Life in 14 months and if the effort is not monumental, we may offer it ourselves. It does appear that this may be the case as the 8.0 series has had Debian 11 support for several releases now whereas the 5.7 series has not. I must also note again that 5.7 will be EOL in 14 months and you should be looking to get up to the 8.0 series as soon as possible.

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George O. Lorch III
Director of Server Engineering, Percona Server for MySQL, Percona XtraDB Cluster, and Percona XtraBackup