KDE Plasma 6.7 ships per-screen virtual desktops and a CSS theming preview

Category: Dev tools
Status: confirmed
Sources: KDE announcement, discussion
Summary: KDE released Plasma 6.7 on 2026-06-16. The release adds per-screen virtual desktops after 21 years of requests, a tech preview of the Union theming system that applies CSS-based styling across Plasma, QtQuick, and QtWidgets at once, simultaneous ICC color profile and HDR support, and expanded coverage of Wayland protocols and portals. Performance work targets CPU-rendered apps and Intel integrated GPUs.
Why it matters: Plasma is a primary Linux desktop for developers, and the Wayland protocol coverage plus the CSS theming preview affect how desktop applications are styled and composited.