There have been many smaller tweaks and polishings throughout the MMO, and groups may now 'ready check' for battle. The studio has posted a rather lengthy changelog.
Want to see your breathe in cold areas? Well now you can with ColdBreathe FX 2.0, as that's surely what it's called. Several cutscenes are now skippable.
There are tons of changes with patch 2.16 so check out the libraries worth of.