It’s been a while since I’ve been digging in pfSense. A lot of things had happened. The good news is that currently I’ve got a few projects related to the topic and will make a few posts about them. Next post will be related to upgrading to 2.2 from 2.1.5.
In the meantime you can check what are the new features in this release here:
The official article about the release:
and of course the Upgrade Guide