No one else seems to be inclined to comment on formZ, so I have to say it is an excellant 3D modeling package which, combined with a good 2D software like PowerCADD 7, make a great combination for architects. It is a professional level program so it takes a certain amount of effort to master but it is well worth your time.

This release is Universal Binary and I don't have the hardware to test that aspect but I have been using version 6.0.4 for a while now and it is great.