Sorry for the late post, as many of you already know (or may not), pfSense 2.2 was released on January 23rd.
Here are the official release notes: https://blog.pfsense.org/?p=1546
My current recommendation is to hold off on upgrading (if you have 3rd party packages installed on top of the core pfSense). There was a major OS change to upgrade to FreeBSD 10.1 and with that it has made a lot of packages incompatible (aka broken) I would hold off and wait for the package maintainers to upgrade the packages to support the new core pfSense.
Lets keep those bad guys out!