There has been a lot of questions regarding the new DLC Viking Conquest. This Frequently Answered Question thread should hopefully answer a few.

FAQ

When is Viking Conquest being released?

VC is being released on the 11th of December. It will release at 6pm GMT. That's 12pm (noon) CST. Despite Steam stating it is on the 30th it is not.

What new features can I expect from Viking Conquest?

You can expect there to be a lot of new content. Sea battles (with ships), weapons, armour, character models (which you can see here - https://www.youtube.com/watch?v=mfWvVATZL54), troop types. You can also expect to see a new World Map and different Scenery.

I bought Viking Conquest but it's not downloaded!

Viking Conquest will download when Steam unlock it. It is a DLC, meaning it will download as a module, same as Napoleonic Wars. You can check that you've bought it by right clicking Mount & Blade: Warband in Steam and going to properties>DLC.

Is it Singleplayer or Multiplayer?

Viking Conquest is both Singleplayer and Multiplayer. You should expect to find the features listed above in both sections of the game. There is likely to be clan wars (like in Napoleonic Wars).

Further information can be found here https://www.taleworlds.com/en/Games/VikingConquest You're welcome to direct your questions towards this thread. Myself and the community will try our best to answer them.