Now that Episode III has been released to theaters and is available on DVD, more of the film's crew are posting samples of their work on their personal websites. A good deal of this imagery hasn't appeared elsewhere. Here are some favorites:

Ryan Church, Concept Design Supervisor: 44 concept paintings from Episode III, plus paintings from Episode II as well. The Links page also has links to the personal websites of many of the other Episode III concept artists.

Alex Jaeger, Visual Effects Art Director: 9 concept illustrations including clones and the Tantive IV.

Yanick Dusseault, Lead Digital Matte Artist: 7 outstanding digital matte paintings, including high resolution images of Theed spaceport and views of the Coruscant skyline.

Richard Bluff, Digital Matte Artist: 9 final images from the film featuring Bluff's mattes, including some great Coruscant shots.

In addition, several of the Episode III crew have gone on to form new companies, with websites that might be interesting to watch in the future:

Halon Entertainment
Formed by Pre-Visualization/Effects Supervisor Dan Gregoire, this effects company also includes Euisung Lee, Brad Alexander, and Dorian Bustamonte from the Episode III Animatics Department. The site has animatics reels from Episode II and III.

Ninth Ray
A new design and conceptual art company formed by Ryan Church, Iain McCaig, and Robert Barnes. Fantastic!