Unlikely.
To my knowledge, in order to have ‘point releases’, you have to first have a base ISO release. Which doesn’t exist here, so they don’t get any ‘point releases’ for ISOs.
The solution, as I wrote, is to install Ubuntu Server 26.04 and then install ubuntu-mate-desktop on top of that and then shut down and reboot for a “clean” install. Or install standard Ubuntu 26.04 and then install ubuntu-mate-desktop and choose the MATE session for your environment.
In either case, I would not expect any 26.04.* ISOs for MATE.