The Linux Mint team has released a stable version of the Upgrade Tool so LMDE 4 users can now upgrade to LMDE 5. Unfortunately, you still need the terminal to install the Upgrade Tool.
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The Linux Mint team is finally working on an upgrade tool that will give users a graphical way to upgrade to new major versions of Linux Mint. It will be available in a couple of months.
The Linux Mint project has released LMDE 5. Instead of using Ubuntu as a base, LMDE 5 uses Debian. It's meant as a backup operating system, should anything bad happen to Ubuntu in the future.
