I'd like it too. The new docs do refer to it e.g:

> When S3 compatibility is enabled (currently in beta), the number of available replication points is reduced

I assume it's a private beta.

https://docs.bunny.net/storage/storage-tiers#s3-compatibilit...

It indeed is. Support answer:

> This feature is currently in the closed beta stage. It is not available for use currently, but it's expected to be in the near future. We appreciate your interest in it and will mark your ticket so we can notify you when it's available.