Important Changes to the Microsoft Forefront Product Roadmap | Closer to the Edge Blog (MSEdge.org.uk).
I was struggling to understand the different UAG patches today. By my opinion MS should do something about their overview and naming of the updates. SP, Hotfix, Rollup and Update.. Well.. It`s easy to misunderstand something. I found this great overview of the different patches. It also seems like its getting updated frequently. Knowledge Base.