Kalpa is an immutable distro based on MicroOS with KDE as it's desktop environment.

MicroOS and its derivatives are all based on Tumbleweed. MicroOS was intended to be used for container workloads. Aeon grew out of that with a GNOME desktop, Kalpa a KDE desktop. Because they were focused in a way Tumbleweed is not, they are a more opinionated distro. On the other hand, Tumbleweed is a rolling distro that wants to be all things for everyone.

I was trying to figure out the change as well - I've only used Tumbleweed through WSL before. Does it provide a desktop environment preinstalled or is it a 'bring-your-own' deal? (if not, that seems to be the big thing that Kalpa brings to the table?)

"I have a minor inconvenience -- I know, I'll create an entirely new distribution where 99.92% is identical to the base"