I got tired of waiting around for the official release and I got Army Builder running on my Mac. Here is how I did it -
Download Wine Bottler - http://winebottler.kronenberg.org/
Install it and Wine
Open Wine Bottler
Select Create Custom Prefixes
Check MSXML6
Browse to the Army Builder Install File and click through the install
Once it is installed exit Army Builder
Wine Bottler will then put an icon on your desktop and you can run Army Builder straight from there. No virtual machines, no boot camp.
It has worked well so far, the only issue is that you have to press the space bar instead of clicking on buttons in dialog windows. Once you get into the program you can manipulate units and lists just like normal. Best part about this is that Wine Bottler is free and all of this is above the board legally.