Meanwhile we can and should continue testing and provide our feedback to kamailio developers so WS support gets more and more mature for final release. So, lets keep this thread alive. :-)
Unfortunately the developers in the project gets all the attention, but testing and writing documentation is equally important. In Kamailio.org we do rely on our community to help us with testing of all new features and keep reporting bugs. You are the real important people.
...especially if you also help fund the work done by developers ;-)
/O