LXQt 1.4 debuted today as the newest feature release for this lightweight Qt desktop environment that was formed years ago as the merging of the LXDE and Razor-qt projects.
LXQt 1.4 targets the Qt 5.15 LTS toolkit but if all goes well this will be their final Qt5-based release. By the time of the next LXQt version they hope to be fully ported over to using the Qt 6 toolkit, even if it means a drawn out release cycle.
LXQt 1.4 also has lxqt-menu-data replacing lxmenu-data, various improvements to the LXQt file manager, QTerminal now supports an audible bell as an option, the LXQt image viewer has minimal support for color spaces, many translation updates, and a variety of other smaller fixes.
What? Please no. XFCE is its own thing. It is not old GNOME. They are both GTK based so a little collaboration on apps they both need would be interesting. Beyond that, they are different projects—like GNOME and KDE. BTW, there is also an “old” KDE called Trinity.