AutoDesSys has released bonzai3d
(http://www.bonzai3d.com/bonzai3d_home.html) for Mac OS X and Windows
systems. It’s a 3D modeling app for delivering conceptual design and
sketching ideas quickly and easily.

It accommodates the progression from simple intuitive visualizations
to a mature level of design sophistication while keeping in mind
efficiency, productivity and affordability, says AutoDesSys President
Chris Yessios.. More than 20 file formats provide easy
interoperability with other applications.

bonzia3D sports embedded tutorial videos and tools that include
descriptive step-by-step guides and interface hints. Bonzai3d will be
offered at US$500, but AIA conference attendees can get it at the on
site show special for $299. A demo is available for download.