9to5Linux Weekly Roundup for September 20th, 2026, brings news about GNOME 51, Firefox 156, Thunderbird 156, Fedora 45 Beta, Calibre 9.15, MX Linux 25.3, PipeWire 1.6.9, Clonezilla Live 3.3.3-37, HPLIP 3.26.6, Ubuntu 26.10 Snapshot 4, VirtualBox 7.2.18, new Raspberry Pi OS release, DXVK 3.1.1, and more.