Today, Microsoft has announced an update regarding the ForeFront product line.
After announcing the end of ForeFront TMG and ForeFront Protection – see http://blog.hametbenoit.info/2012/09/13/forefront-microsoft-has-announced-some-important-changes-in-the-forefront-products-line/, Microsoft is now ending ForeFront UAG too.
ForeFront UAG will be removed from the catalog in July 2014; as for ForeFront TMG, support will be maintained until the end of his lifecycle – until April 2015 for standard support and April 2020 for extended support.
Customer will have rights to upgrade to Windows Server 2012 R2 to replace ForeFront UAG by using publication features introduced with 2012 R2.
See all the details here http://blogs.technet.com/b/server-cloud/archive/2013/12/17/important-changes-to-the-forefront-product-line.aspx