Microsoft recently released Forefront UAG Service Pack 4.
The main features are:
- Windows 8.1 support: Internet Explorer 11 desktop and modern UI
- Mail modern UI client support
- Remote Desktop client 8.1 support
- Remote Desktop Server hosted on Windows 2012 / 2012 R2
- Fixed issues
For more information about the included updates and issue corrected on the product team blog.
The Service pack is now available on Microsoft Download Center: http://www.microsoft.com/en-us/download/details.aspx?id=41181