Microsoft recently released Forefront UAG Service Pack 1.
You could update the following versions of Forefront UAG:
- Update 1
- Update 2
- SP1 Beta
- SP1 RC
- A lot of update for DirectAccess configuration
- Provides trace file available on Microsoft download center. For more information on how to use them Frédéric Esnouf wrote an excellent article.
- ADFS v2.0 support
- Better support of SharePoint 2010 publication introduced on Update 1
Some steps are required in order to update to this service pack as described here: http://technet.microsoft.com/en-us/library/gg281604.aspx.
For more information about the SP1: http://technet.microsoft.com/en-us/library/gg295322.aspx.
The SP1 is available for download on Microsoft download center, there's also an integrated version available on MVLS.
[Update] It's also available on the MSDN.