Reading it'sfoss's comments re the upcoming LM 21 release, it would appear the official changelog/feature list is not yet available for the stable release.
What I can see is, a new upgrade tool. This applies to just LM20.3 as far as I can tell.
It does not involve using the Terminal......so the terminally challenged among us will be relieved.
Bluetooth gets a new application....Blueman Tool
This does away with the connection to Gnome
Blueman is a GTK + Bluetooth Manager
As has been discussed elsewhere,
Timeshift development has been taken over by the Mint Team
This should provide some certainty for Timeshift, given the current developers move in other directions.
LM21 will also support WebP image format....small & high quality...
.by default in LM21. You can open the WebP images in the image viewer and the images will be displayed with their thumbnail in the Nemo file manager.
While Ubuntu 22.01 (the base for LM21) has problems with dual boot (windows)....namely that windows disappeared from the grub menu
Mint team has correctly decided to enable the os-prober by default
. This means that the Grub bootloader with Mint 21 should be able to properly detect Windows (and other OS) as it used to previously.
Ubuntu has a "
systemd-oomd, a userspace out-of-memory (OOM) killing service. This service takes “corrective action before an OOM occurs in the kernel space”
Linux Mint has decided to NOT use this "performance improver"....many ubuntu users are complaining about the shutdown of running applications as well.
Ubuntu has removed the libfuse library ....which means you cannot run Appimage applications
Linux Mint has included libfuse2 and libfuse3-3 by default in Mint 21, so AppImages applications CAN be installed.
Cinnamon will upgrade to 5.4.2....and the Kernel 5.15 will be included.
So, simply running a live version of LM21 will probably not excite you a great deal....particularly in terms of "new Addition" and the like.
But,
the small yet important differences between Ubuntu 22.04 and Linux Mint 21. are slowly but surely becoming apparent.
Inevitably the question will be asked.....so what's the difference between Ubuntu 22.04 and LM21 ??????
The differences are subtle at this point.....but they will make a big difference to Users.