From Shuttleworth himself:
I suppose this also means they are abandoning their stupid folly into Mir as well, all that wasted effort which could have been spent on Weyland.
Ubuntu 16.04lts is good to go for some time to come. You can run a number of desktops there. I have cinnamon, gnome,kde,mate and solus running just fine. Having
said that I recently tried to get Tumbleweed to work right and just could not, so I installed leap 42.2 and after some tinkering which I enjoy, everything is working great.
I am using the kde desktop but installed the gnome as well no complaints. I like the idea of having suse because who knows what ubuntu is going to end up doing??
I really really like Yast. Its better than synaptic because its harder to err when installing from yast.