Grml users could test before the RC goes final:

http://xfce-diary.blogspot.com/2006/09/xfce-44-release-candiate-1.html#c1157...

deb http://xfce.corsac.net/ sid main

"these are build for debian sid/unstable, but should work on debian-clones too, as far the dependencies are ok (this should be the case, if you are using some 4.4 beta)

i think these packages should hit unstable soon, as everybody loves to see xfce 4.4 final in etch in december"