Although it is technically only a point release, JSF 2.2 actually has quite a bit of good stuff for JSF fans. In a brief article, Arjan Tijms does a great job of overviewing the big ticket items included in JSF 2.2. He talks about view actions, the Faces flow, HTML 5/pass-through attributes, the file upload component, CDI alignment and more.
If the article whets your appetite to learn more about JSF 2.2, you could download the actual public review draft and give it a read. For those unaware, JSF 2.2 recently near unanimously passed its public review ballot. Bear in mind, the primary audience for a specification document is technology experts/implementors, so this is not necessarily a read for the faint of heart :-). JSF is also one of the larger Java EE specifications - the document is 400+ pages long. However, spec lead Ed Burns did a great job of summarizing the changes towards the beginning of the document in the section titled Changes between 2.1 and 2.2.