This is a follow up to Forefront Protection 2010 for Exchange Server Roadmap. In that post, I referred to a blog post on the Server and Cloud blog, Important Changes to Forefront Product Roadmaps, which explained that future releases of FPE are being discontinued. (It's important to note subscriptions to FPE will be supported through December 31, 2015.)
Since then, we've gotten quite a few folks asking what the process is for renewing a subscription to FPE. It's here in the FPE documentation on TechNet: About product licensing.