True, they have a lot of work to do. This whole situation would have been avoided easily by using more sane numbers on pre KDE 4.2 releases.
Have you ever thought that PC/OS would use KDE4 instead of XFCE as a default desktop?
When KDE is ready yes PC/OS will have a KDE release built, PC/OS 2009v2 includes GNOME and XFCE alongside each other due to customer demand. The developer working on the KDE release sent me a PC/OS build that he made with KDE 4.2.