Daniel Robbins has announced that after March 1, 2020, it will stop servicing and updating the 1.3 release.
Oddly enough, the reason for this was that the current 1.4 release turned out to be better and more stable than 1.3-LTS. Therefore, Daniel recommends that those using version 1.3 plan to upgrade to 1.4.
In addition, a second "maintenance" release for version 1.4 is expected in January, with package updates and kernel security fixes. Based on 1.4-MR2, new stage3s and stage3s GNOME binaries will be generated.
Upgrade Instructions/1.4-release
Useful:
Source: linux.org.ru