New features include a cool take on Plasma's edit mode, keyboard LEDs that sync with accent colors, an inbuilt Remote Desktop Server that let's you access Plasma desktops over a network, lots of bug corrections and improvements.
Plasma 6.1 on Wayland now has a feature that "remembers" what you were doing in your last session like it did under X11. Although this is still work in progress
Well, prepare your butts. I've got 20+ virtual desktops and I'm only mildly afraid to log out of them.
Ah, that's a pity, but I half-expected that to be what's still work-in-progress, especially since I'm also using Activities to group my workspaces.
I do hope the new system allows creating something more reliable in the long-term, though.