A little later than usual, they usually publish it at the end of each month, «Clem» posted the monthly note on the project of the operating system that it develops. Linux Mint 20.3 I arrive a couple of weeks later than expected, but I think nobody can complain if the delay or extra time has been used to perfect things. The next version will be Linux Mint 21, and Lefebvre has said that it is already taking shape.
For those who want to follow the development, not recommended for those who expect details or clear explanations, the information is being published in this link. It is there that Linux Mint 21 is supposed to be seen is taking shape, partly because it is seen that there is movement. But in the March note they have also taken the opportunity to announce something else.
Linux Mint 21 will ditch Blueberry and use Blueman
The team has released LMDE 5 Beta, which comes weeks after start your development. Clem says that they have already received 22 bug reports from the community, which will help improve things ahead of the stable release. But the most important thing for the number of users is the Ubuntu-based version, and Linux Mint 21 will arrive with a new JavaScript interpreter in Cinnamon and will override its window manager in a more modern version of Mutter. In addition, they will introduce changes to improve Bluetooth connections:
Linux Mint 21 is likely to change from Blueberry (which uses the gnome-bluetooth backend) to Blueman (which uses bluez). Feedback showed that it worked better with Bluetooth audio headsets and connected to a wider range of devices. On the development side of things, the latest version of gnome-bluetooth introduced changes that broke compatibility with Blueberry and its main developer is unwilling to see his work used outside of GNOME. Blueman, on the other hand, welcomed the migration to Mint and is open to changes. We are currently testing Blueman and working on integrating it into Linux Mint.
No release date has been mentioned, but Linux Mint 21 is expected to arrive in summer, probably in July.
The Mutter/Muffin thing is a positive...as it opens the door for Wayland at Cinnamon