we are still working on the overhaul of the source. Julian is almost done porting all of our graphics code to OpenGL 3.3 he improved portal rendering and lighting a great deal in the process.
His portal code makes it possible to place portals on floors and ceilings, however we are not sure if we incorporate this into gameplay in the next release yet.
I was able to write a loader for maps that are written in XML format. This removes a lot of limitations that the old format imposed on us. Due to high demand I started to write a blender export addon that exports to our new map format from blender.