On the Z4 features page under the “feature list” tab:
http://www.pixologic.com/zbrush/features/zbrush4/feature-list/
There is a section on Best Preview Render which features a video for that topic. In the next column slightly below there is a section on 3D Painting and Materials with a video, but that video is the same as Best Preview Render.
Is there a video on 3D Painting and Materials and if so, could you make this correction so we check this out???
Thanks,
remcv8