https://blog.system76.com/post/pop-os-letter-from-our-founder At the bottom, "Pop!_OS 22.04 LTS users will receive an upgrade notification in the OS starting January 2026. If you wish to upgrade to Pop!_OS 24.04 LTS before then, after backing up your files, open Terminal and run"

Probably the Feb numbers should reflect a larger migration to the latest Pop.