This is a minor maintenance release in the 4MLinux STABLE channel. The release ships with the Linux kernel 4.4.34, which restores PAE support that "magically" disappeared in 4MLinux 20.0 (sorry :-). Additionally, some popular programs (Double Commander, Dropbox, Firefox, Java RE, Opera, PeaZip, Thunderbird, Wine) have been updated, too.
Please note that 4MLinux can be run as a semi-rolling distro (no need to install it from scratch again and again). Just execute the "zk update" command in your terminal to update your 4MLinux to its latest stable version (20.1). This is a fully automatic process.