Alan Pope (popey) has recently begun a series of YouTube videos hi-lighting the new 20.04 Ubuntu and flavour releases.
He just released one on Ubuntu MATE.
This is a great walk through for how do to an QA ISO test, http://iso.qa.ubuntu.com/.
I encourage everyone to watch the video and to take a few minutes and test the new 20.04 ISO's. The more testers we have the better!
Please join us over in this thread to let us know if you are seeing any issues with this release.