Raspberry Pi OS Bullseye vs. Buster

I noticed on https://about.gitlab.com/install/#raspberry-pi-os that it mentions Raspberry Pi OS Bullseye (32-bit). This is misleading since there are no Bullseye packages that I can find at https://packages.gitlab.com/gitlab/raspberry-pi2?page=1. Does this mean that Bullseye support is imminent or is this a gaffe?

I noticed this morning that 15.5.0 was released on the URL above for both Buster and Bullseye. So, the Bullseye support ended up being imminent. How much longer is it expected for GitLab to support Buster?