The second part of the Mediah update from Daum Games for Black Desert Online features class changes, monster adjustments, the temporary removal of specific North American servers, and a number of new items in the cash shop.
You can read a very pirate-themed announcement and very pirate-themed patch notes for this very pirate-themed update here and here. (Be careful! The amount of pirate-themed content may be too much for ya!) .
Lastly, here's a video overview of the update: