mythwolfage.com tracked down Andrew Meggs' homepage, antennahead.com, and noted that he'd commented on Myth III's progress on the 18th and 31st of March. Among other things:

The game has progressed from a new set of maps for Myth 2, some models and animations in 3DS, and disconnected code to Myth 3 with some rough spots and missing pieces.

The Wight model is something truly unique.

The new renderer has the best OpenGL pipeline I've ever seen, and may support reflections and bump-mapping.

Meggs is temporarily demoting himself from lead programmer so he can spend less time administrating and more time coding.

This is a good site to watch, it seems...