Just to inform: Xfce has a different release model then KDE and GNOME (and probably any other desktops). Because the development team is small (3 active developers), we decided that making stable release consumes too much time. So instead we make 1 stable release each year (time permitting, so 4.10 was ~4 months late), containing libxfce4uti-4.10.0, thunar-1.4.0 etcetc..
Originally Posted by Awesomeness
After that we only make stable releases of individual packages: so the latest Xfce 4.8 versions are xfce4-dev-tools-4.8.0 (same as in the 4.8 bulk release), xfce4-panel-4.8.6 (6 stable releases after 4.8.0 which was in the 4.8 release), xfce4-settings-4.8.3 (3 releases after 4.8) etcetc.
The single stable release consumes 10 minutes, a full stable release almost a day. I think the the last year Xfce made over 40 individual stable releases (for the desktop-critical packages), where as GNOME and KDE maybe had 10 full-stable releases. Both models work fine, but the latter requires a lot more effort (which Xfce doesn't have).