The work on JSF 2.2 started in early 2011, just a couple of months after the second maintenance release of JSF 2.0. After two years of work on the specification and reference implementation (Mojarra 2.2), JSF 2.2 was released in late May 2013. JSF 2.2 is also part of Java EE 7 released in June 2013. JSF 2.2 provides a handful of exciting new features (also known as the big-ticket features), a number of significant improvements, and quite a few specification clarifications and bug fixes. JSF 2.2 is backwards compatible with earlier 2.0 releases. This is great news, as you won’t have to rewrite your JSF 2.0 application to support the new features of 2.2. There are a couple of exceptions where you would have to make minor changes to your application.