In a surprising move, Canonical announced that it is pulling the plug on Unity, its in-house shell, and is going back to Gnome.
Mark Shuttleworth, founder of Canonical and Ubuntu wrote about the move in a blog post:
I’m writing to let you know that we will end our investment in Unity8, the phone and convergence shell. We will shift our default Ubuntu desktop back to GNOME for Ubuntu 18.04 LTS.
The company is also withdrawing from its in-house display server Mir and Ubuntu phones, tablets and smart TVs.