Looks like KDE is working on a new desktop and it appears to be primarily for tablets or phones. I’m aware that they already have a mobile DE. I don’t know if Maui is an update to it or a major re-working.
Other than being QT based, I’m not sure this has connections to KDE or Plasma
Created, developed, and maintained by the same team behind Nitrux Linux, the Maui project has produced a wide variety of essential apps.
May not be related to Plasma itself, but isn’t Maui a KDE project?
_I think the Maui framework and several apps using it are from the KDE team. I think the shell was the idea and work of Nitrux