Yuri Bushen of Freelancer has posted a Myth III review that has loads of new screenshots and is a positive review, scoring an overall 8.06 out of 10. Notable complaints are the incompatibilities with Windows XP and the AI. However, they were very impressed with the graphics and artwork. Bushen on the multiplayer mode:

In one word, I should say that this mode is no worse [than] that of previous game in the series.

Hmm... OK. Not sure if this is a good or bad thing, but the multiplayer mode got a 7 out of 10 score. (Thanks Myth Village)