The QtWebKit-2.2 branch is now open. In other words, the stabilization process that will lead to the 2.2 release has started.
Although still in planning stage, what we know for sure is that it'll be based on QtWebKit-2.1 (the branch has been forked from the qtwebkit-2.1 branch) and should be made available sooner than usual (in terms of branch stabilization time).
Please note that, just as QtWebKit-2.1, QtWebKit-2.2 will be an intermediary release, non officially supported by Nokia on all platforms.
Some links of interest:
Tests and feedback are very welcome, as usual.