Microsoft Forefront Unified Access Gateway 2010 is discontinued!
The product will be removed from pricelists on the first of July 2014 and the Mainstream support will continue through April 14, 2015.
More information:
http://blogs.technet.com/b/server-cloud/archive/2013/12/17/important-changes-to-the-forefront-product-line.aspx
What NOW?
Microsoft will continue the develope the Web Application Proxy (WAP) role within Microsoft Windows 2012 R2. Keep come and wait for great things to come.....