Greetings player,
We are very sorry to announce that, unfortunately, we had to make the decision to delay the release of the Valencia & Siege Mode update.
Due to some technical issue to adapt the Season 4 of Siege mode to our build, we felt that we were not ready for this new content.
We also want to take this opportunity of deployment to further improve the security system of the game, targeting bots and such forbidden software. This is an ongoing task on which we’ve been working for a while now and the Valencia & Siege Mode update could be a key point in that matter, as we don’t want the new Siege content to be overshadowed by this matter.
To compensate this situation we decided to extand the duration of the “Blackstone” and “Pirate Rhum” event for one extra week.
Once again we want to apologize for this delay and will do our best to release it as soon as possible.
Thank you for your understanding.
The BDO Team
Source: http://forum.blackdesertonline.com/index.php?/topic/88634-delay-of-the-valencia-update/