Credit I believe to @willysr, Mate & Cinnamon packages are available for slackware64 on ftp.slackware.uk/csb. I have them for Slackware64-Current.

I grabbed them last night. I intend to install them, and have Cinnamon as one of the options available to me under SDDM. Can anyone see a problem with that?

One other thing: I believe Cinnamon-6.x is Wayland ready, sort of. Has anyone done it? How? Don't they need a separate server?

this is for MATE: https://wiki.mate-desktop.org/develo...orner/roadmap/

this is for Cinnamon: https://forums.linuxmint.com/viewtopic.php?t=411761

Saying they're 'alpha' says it all. Still better than M$ windows. Don't worry, I'm fond of the easy life, and I'm staying on X11 for the moment. But if it needs it's own X server or something, now's a good time to warn me.

I made a liveslak of the cinnamon flavour, as well as Mint. I like the 4 separate X screenfuls that XFCE & Mint have, but I nevertheless was drawn towards Cinnamon. So this was largely to check how incompatible they are now, and it appears they are not.
Don't worry, there will be a full recent backup before I try anything. After all, what are backup disks for?