A new version of the Plasma Desktop has been released, v5.5.0 \o/

A few of the new features include:

• Updated Breeze Plasma theme.
• Renewed Plasma widget explorer.
• Expanded feature set in application launcher.
• New applets in Plasma Addons: User Switcher, Disk Quota, Activity Pager...
• Restored legacy icons in system tray support.
• OpenGL ES Support in KWin.
• More Wayland progress.
• Plasma NetworkManager enhancements.

Full Plasma 5.5.0 changelog (from 5.4.3) here.

Full article: https://dot.kde.org/2015/12/08/plasma-55-beautiful-new-artwork