Ben Mauro has released a free 3D environment design tutorial using ZBrush, Keyshot and Photoshop.
Fibermesh Hair Tutorial
Yuri Alexander has posted a tutorial on creating and rendering Fibermesh hair.
Cezar Brandao - Sculpting Livestream
Take a look at Cezar Brandao's sculpting-centric Livestream channel.
ZBrush at SIGGRAPH 2013
Check out what Pixologic's has in store for you with their ZBrush booth at SIGGRAPH 2013.