Qt4.4.0 packages with WEBKIT (yeah!)are available at qt4 for maemo homepage.
These packages aren’t compatible with the old Qt4 applications in our repository. So we descourage anyone to force a dist-upgrade on your device.
I’m providing to rebuild ours Qt4 applications and these will be uploaded soon for a “sane” upgrading.
Have a fun with the cutting edge Qt and Webkit!
Ps: if you want to try Qt4.4.0 power, you can install qt4-demos. It’ll take ~80Mb of space of your sdk environment.