Quote - Does the inclusion of wxpython mean we (the script writers not me personally) can create proper interfaces that are dockable within Poser?

 
That's exactly what it is. If you look at Bagginsbill's screenshot, note the little analog clock: That's a 3rd party Python script. Not the most complex example, obviously, but yes, you can create interfaces that are dockable.

Tkinter and the Poser specific dialog library remain in place for compatibility with legacy scripts.