Today KDE releases a bugfix update to Plasma 5, versioned 5.4.2.
This release adds a month's worth of new translations and fixes from KDE's contributors. The bugfixes are typically small but important and include:
The easiest way to try it out is with a live image booted off a USB disk. You can find a list of Live Images with Plasma 5 on the KDE Community Wiki.
Distributions have created, or are in the process of creating, packages listed on our wiki page.
You can install Plasma 5 directly from source. KDE's community wiki has instructions to compile it. Note that Plasma 5 does not co-install with Plasma 4, you will need to uninstall older versions or install into a separate prefix.
Discuss Plasma 5 on the KDE Forums Plasma 5 board.
Your feedback is greatly appreciated.