9to5Linux Weekly Roundup for June 21st, 2026, brings news about KDE Plasma 6.7, postmarketOS 26.06, Firefox 152, SparkyLinux 2026.06, Darktable 5.6, VirtualBox 7.2.10, GNU Linux-lbre 7.1, Qt Creator 20, Giada 1.5, Thunderbird 152, PorteuX 2.7, NVIDIA 595.84, PipeWire 1.6.7, Raspberry Pi Imager 2.0.10, Shelly 2.4, and more.