You appear to be a little behind on that status of Ubuntu MATE; are you?
If you are, reading the following may help
let alone many threads on the Ubuntu MATE Community Discourse (which will soon be shutdown)
There will be no Ubuntu MATE 26.04 released, with much discussion about that over on the Ubuntu MATE [Community] Discourse, and even some on this site. There have also been questions/threads on what happens to existing users, including those who want to release-upgrade to 26.04 too.
Ubuntu 26.04 LTS is soon to release, after which the development branch will soon open for stonking (what will become Ubuntu 26.10) which is where the new Ubuntu MATE development team may provide us with more [in time].