We’ve upgraded Slackware AArch64 to Linux 6.18 LTS and, after several days of testing, everything has been running smoothly. If you hit any issues, reply to the forum thread on LinuxQuestions.
https://www.linuxquestions.org/questions/showthread.php?p=6609702#post6609702
I’ve also added a substantial amount of new hardware support to make onboarding Slackware on to new hardware models much easier, & merged a large set of changes needed for Chromebook support. Huge thanks to William Burlamachi for his work on that.