What makes Ubuntu an interesting OS in 2016 is its convergence story -- where the same codebase will run across devices and you can use it on the desktop as well as mobile devices. We may see some progress on that front this year, according to reports.
Ubuntu used to be the king of desktop Linux, but recently Canonical, Ubuntu's sponsor, has changed its focus to mobile devices. Both Mir, the display server, and Unity, the desktop environment, are being developed for mobile first. Then they will arrive on the desktop.
In april, Ubuntu 16.04 LTS will be released, and Ubuntu will also make its debut on IBM’s LinuxONE mainframe.
One bright spot on the desktop: With 16.04, Canonical will ditch online integration of advertisements from Unity Dash, removing a controversial component from the Ubuntu desktop.