Users wishing to get MATE desktop on OMLx 3.03, they can do it thank to @mandian and his own personal repository.
Please enter the following commands in a root console
urpmi.addmedia --no-verify mandian_personal http://abf-downloads.openmandriva.org/mandian_personal/repository/3.0/x86_64/main/release urpmi.update -a urpmi task-mate openmandriva-mate-config
Please note that MATE desktop currently is not (yet ) officially supported.
The present call is intended for testing purpose.
Any feedback will be highly appreciated.