It's not even officially available but I've already installed the Mint 22 beta. Not bad, only a small bug, nothing to worry about.
The beta is easy to find. Just go to the download section and copy the url from one of the mirrors. If you remove the file name you can explore the other folders.
The thing I don't like is that by default the software manager doesn't show unverified flatpaks. That's annoying and doesn't really make them safer. Especially since they removed reviews and scores from unverified flatpaks which would be the easiest way to know if there's something wrong with them.
