In a recent community Q&A the team revealed that it is looking to deploy small to medium sized updates on a "near monthly" basis. Other points of interest include the fact that the team did not fully expect the amount of interest in the game; that they're looking at other ways to communicate with players; the ghillie suit is being given a look as well as the 'flare' counter-measure; and no ETA on when new classes will appear, though they may show up in a different order than Korea.
You can read the full summary on the Black Desert Reddit.
Thanks WNxbadboy3 for the tip!