Thursday, 17 May 2018. Today KDE unveils a beta release of Plasma 5.13.

Members of the Plasma team have been working hard to continue making Plasma a lightweight and responsive desktop which loads and runs quickly, but remains full-featured with a polished look and feel. We have spent the last four months optimising startup and minimising memory usage, yielding faster time-to-desktop, better runtime performance and less memory consumption. Basic features like panel popups were optimised to make sure they run smoothly even on the lowest-end hardware. Our design teams have not rested either, producing beautiful new integrated lock and login screen graphics.

New in Plasma 5.13

• Plasma Browser Integration.
• System Settings Redesigns.
• New Look for Lock and Login Screens.
• A tech preview of GTK global menu integration.
• Redesigned Media Player Widget.
• The Mouse System Settings page has been rewritten for libinput support on X and Wayland.
• A new dialog pops up when you first plug in an external monitor so you can easily configure how it should be positioned.
• ...

kde.org/announcements/plasma-5.12.90.php

As usual, great stuff! =)