Mainly small bug fixes and a new feature to export the findings into an Excel spreadsheet.

Download link is -

http://www.microsoft.com/downloads/details.aspx?FamilyId=0178e2ef-9da8-445e-9348-c93f24cc9f9d&displaylang=en 

We recommend all users to upgrade to this version.

We have some work now starting on new features including general performance improvements, UI improvements and rules maintenance. We expect these to be complete by summer after which time we then expect to undertake some core engine updates to significantly improve the performance, scalability and vulnerability coverage.

Note: The MSDN download page says 1.0 but it is 1.1.1.8. well fix that ;-)