Pixologic has announcedZBrush 3.12 for Mac OS X. The list of new features in this release is extensive, with such things as posable symmetry, HD geometry, 3D layers, new brush palettes, polypaint, real-time preview shadows, movie maker with QuickTime exporter and more.
A complete list of all the features in the new Mac OS X version of Pixologic’s ZBrush can be found here.