Zorin OS and Zorin OS Pro have both been updated to version 17.2, which brings with it the latest Linux Kernel. Touted as one of the easiest Linux distros to theme, the update brings even more customization options as well as improved performance and security. https://www.notebookcheck.net/Zorin-OS-Pro-17-2-expands-hyper-customization-options.891116.0.html
Soon enough, there will be few to zero open-source OSs and applications left that are actually free for anyone to use.