Word has come out that Ubuntu is dropping its home-bred graphical engine and interface Unity, and returning to Gnome 3 Desktop.
The experiment lasted 7 years, Unity was introduced since version 10.10 (Maverick Meerkat) and was touted (mainly only by Canonical) as visionary, making a more efficient use of the screen (very relative), with never materialized promises of superior (gaming?) performance and stability.
Canonical is also returning to its roots,concentrating on Desktop, Server, Cloud and IoT platforms, abandoning it’s plans to further develop a Phone Operative System.
The next version of Ubuntu, running Gnome will be 18.04 (LTS)