You can read the official announcement about this recent update, here.
However, im not able to view any records in BFHQ and the "Stats" tab . If you have done that correctly, go to this thread. As such it should be overlooked, because I was not aware of most of the informations I have collected in this post, (for example I might just have switched from a Ranked Server to an Unranked one without knowing it, thus being stripped of my Rank and probably losing the unlocks as well).
It seems like records from my gameplay were not recorded. This is because the stats are usually sent to us to us.
To make sure that one of those Ranked Servers is reporting data back to us correctly, visit the Servers Transmit Log and look for that specific Server.
It has its own ranking system to keep track of the user's statistics similar to the one used in its predecessor, Battlefield 2.
It opens up new categories of vehicles and weapons not seen in Battlefield 2.