We tried to do it and we finally release on time this second alpha for Mageia 4. This is a "real" alpha, meaning there was a lot of breakages and fun in testing. But thanks to packagers and QA team, you can now discover this new development release.
We still have a big work to do on desktop integration. Several features for Mageia 4 are about providing more desktop environments as there is a lot of movement in this area at the moment. Everybody should then find the right one for them depending on their own needs.