Linux Minx 18.3 “Sylvia” is based on the Ubuntu 16.04.3 LTS (Xenial Xerus) operating system and uses the Linux 4.10 kernel series by default.
While the Cinnamon edition ships with the latest and greatest Cinnamon 3.6 desktop environment, the MATE edition is using the MATE 1.18 desktop.
The Software Manager is now also much lighter and faster than before.
It no longer uses Webkit, browsing categories and apps is almost immediate, and it launches 3 times faster than before.
The backend was ported to AptDaemon and the Software Manager now runs in user mode.
Consequently you do not need to enter any passwords to browse applications, and if you enter a password to install or remove an app, the authentication is remembered for a little while so you can install or remove other apps without having to enter that password again.