The Linux Mint team's monthly newsletter for April included a number of significant announcements. The newsletter reported that Linux Mint 13 has reached the end of its supported life cycle. Version 13 of Linux Mint was a long term support release launched back in 2012 and it received five years of support. Anyone still using version 13 is encouraged to release this forum post on upgrading to a newer, supported version of the distribution.
Mint's newsletter also mentioned that version 1.18 of the MATE desktop will soon be available to people running Linux Mint Debian Edition. Further, the upcoming release of the Cinnamon 3.4 desktop will include a number of sability improvements: In the upcoming Cinnamon 3.4 the settings daemon will be split into multiple processes. Each plugin (i.e. area of responsibility) will run its own process, making it easy to identify excessive CPU or memory usage and isolating crashes to only affect a particular plugin without impacting the rest of the desktop. Similarly, Nemo (the file manager) will be split into two separate processes. One for the desktop icons, which will run in isolation, and one for the file manager windows." Further details and more changes coming to Mint can be found in the newsletter.