Last month I ordered and received a Pi4 with 1GB Ram. I've got a 16GB SANDISK Ultra MicroSD card for it. I'm wondering, since it's not on the list of UBuntu MATE versions if it's even worth trying to put the Pi3 version onto it?
Or is there a Pi4 version in the works?
Of course, @Wimpy would be best to answer, but I believe I remember hearing him say on one of the podcasts he was on that he was working on a Pi 4 version of U_Mate... Of course, I'm sure that there a loads of new things on his plate now that he's the head of the Desktop team at Canonical!
But my understanding is that the regular version of Ubuntu does now have a working Pi 4 release.