The Linux Mint team has been working on a substantial upgrade to the Software Manager, which makes it load much quicker and boosts the security by disabling unverified Flatpaks by default.
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The Linux Mint team has released version 21.1 for public consumption. It comes a few weeks after the Beta. It includes a new theme, an improved Update Manager and Software Manager, and more.
Linux Mint's creator has announced that Version 18.3 of the OS is in the works and will feature a completely revamped Software Manager application. The release should see the light of day in November.