That topic has been extensively discussed in
(let alone other threads)
There were issues with the Ubuntu MATE team not meeting all requirements for the 25.10 release, but that was overlooked as releasing a 25.10 ISO is a requirement in applying for LTS status for 26.04. Myself I saw that 25.10 push as the Ubuntu MATE team leaving the option for a 26.04 release open, if they had motivation etc...
No decision has been made for a 26.04 release as I understand it, but if the release occurs it's expected to be a standard 9 month support release now (I gave examples of a prior flavor not having a LTS release on one of the other threads talking about this issue too).
We're in the final days before (12 Feb 2026) release of Ubuntu 24.04.4 LTS; which I talked about on another thread on this site, but I'm not expecting a Ubuntu MATE 24.04.4 LTS release either as the team didn't respond there, other flavors are involved in that 24.04.4 release though.
( MATE 1.28 got stuck in upload [Debian] some time back, due to problem the sole-uploader was unable to resolve... what we have now was uploaded as I mentioned (again elsewhere on this site) is due to a GNOME developer stepping in and resolving a MATE problem after a long period of it being stuck .. the issues relating to MATE impact Debian & all deb based systems as the work is shared somewhat. )