Well, freedesktop.org is now focused on Wayland (Xorg is not getting HDR, new synchronization protocols, or proper VRR (unless through XWayland), while Wayland is). RedHat RHEL marked Xorg as deprecated last year and will not even support it by next year (RHEL 10). KDE and GNOME also default to Wayland.
https://github.com/audacity/audacity/wiki/Roadmap
They’re only waiting for some code restructuring to release 4.0, which includes UI rework.