The 4.2 version simplifies the interface and has a different look and feel. It also introduces a mobile feature which formats the site for small screens when they are detected.

We are running version 3 now. Version 5 just started shipping. The test link is the 4.2 version. It is pretty raw right now. Kenny and I will be working out the colors and graphics.

Here is a 4.2 site that shows what can be done.
http://saabworld.net/forum.php