I'm not quite sure what this is but it was posted on the Silent hunter website:
Silent Hunter IV: Wolves of the Pacific U-Boat Missions Add-on Now Avaliable
Monday 19.11.07 - Click here to download the pack and here for more information about it's contents.
Also, there are 11 new screenshots from the add-on pack here, enjoy!http://silenthunter4.uk.ubi.com/
Check it out.
I am very pleased to announce that the recently announced patch v1.4 is not the end of Ubisoft's support of Silent Hunter: Wolves of the Pacific. There will also be an add-on entitled: "Silent Hunter IV: Wolves of the Pacific U-Boat Missions". This add-on is scheduled to be released in Spring 2008 and will add a number of additional features to the game, including a German Campaign in the Indian Ocean, new resources and submarines to use, as well as Hero crewmembers! Below are some of the details:
German Campaign in the Indian Ocean: The new campaign spans from July 1943 until end of war, in May 1945. Players will operate from such far off Japanese naval bases as Penang, Singapore, Jakarta and Surabaya.
Strategic Warfare: As the player rises in rank and experience he gains access to new strategic resources such as recon aircraft that track down enemy shipping and even battle groups that can help wipe out superior enemy forces.
New Playable Submarines: Take to the seas in the long range Type IX-D2 U-boat and the revolutionary Walther propulsion type XVIII U-boat. Learn the strengths and weaknesses of these boats and how you can overcome even elite late war allied destroyers with high speed hit and run attacks.
Heroes: Based on actual historical figures, these new crewmembers add a number of special abilities that can change the fate of battle and save the ship when the time is right, as well as adding historical color to the game.