At long last, 0.81 has been officially released. You can download it from our Sourceforge site here: http://prdownloads.sourceforge.net/zdoomgl/zdoomgl_081.zip?download
This release has support for dynamic lights and enhanced support for the shaders (documentation is still on the way, but it hasn't changed from the last test releases).
I'm going to be abandoning this codebase now and moving on to the full rewrite. I have the ZDoom 2.1.0 source (from the zdoom forums) compiling and am currently getting that up and running. I already have the polymost renderer working, although that's just for testing the new OpenGL init code (which should be far more robust than the old init code).
v2 will basically require vertex and fragment program support on the video card, so Geforce2's and below are going to be out of luck (sorry to say). It was just getting way too limiting having to support all those low-end cards.
Anyway, hopefully I'll have some screenshots in a week or so!