First big feature update since 2018.
There have been many important changes that make this release a substantial improvement over the 5.x series and a worthwhile upgrade for users on all platforms. There are hundreds of new features and improvements, as well as hundreds of bugs that have been fixed.
https://www.kicad.org/blog/2021/12/KiCad-6.0.0-Release/
https://www.kicad.org/blog/2022/02/KiCad-6.0.4-Release/
Link to source tarball: https://gitlab.com/kicad/code/kicad/-/archive/6.0.4/kicad-6.0.4.tar.bz2
Thx <3