Today Deskbar-Applet 2.23.1, the first release of the unstable series that will lead to 2.24, has been released. A lot has changed since 2.22.0:
80 files changed, 7592 insertions(+), 2377 deletions(-)
You can download Deskbar-Applet 2.23.1 at http://download.gnome.org/sources/deskbar-applet/2.23/
In the following text, I'll present the most significant changes.