Quoting: LoftyInteresting they work with Xreal glasses ? I thought they were just two screens made to look like one big one. How is it working as VR ?

for me VR headsets are just that, a headset. Im interested in XR/AR glasses with 3D support not requiring a 3rd party dongle and Mac / Andriod only software support. The form factor is more appealing for just chilling in bed, couch and looking at a giant screen (in 3D with the right software) But if the XR glasses work in a VR-like manner on KDE plasma id like to try that out.

Breezy Desktop on KDE and GNOME can do multi-display now. So it's not limited to just one ultrawide, you can launch as many virtual displays as your hardware will be able to handle. Most supported glasses are only 3DoF, so you can look around but not move around. It's not VR, though, as the virtual displays are intended to just replace physical monitors and allow you to work as usual, so you use your keyboard and mouse to control just as you typically would.

Breezy also works with 6DoF, though only with one pair of glasses or with OpenTrack + NeuralNet at the moment. This actually allows you to lean in/away or move about the virtual displays in a more VR-ish way, but it's still controlled by keyboard and mouse, still not intended to be a VR experience.