As you can see, WoWWiki now uses the wiki blog extension, for its news. To post news, now you can simply create a blog page, and add it to the appropriate news categories - e.g. December 2010 news, WoWWiki news, World of Warcraft news etc. The blog extension allows anyone not only to post news, but also comments.
Keep in mind that it's been decided that, unlike on some other Wikia wikis, only newsworthy blog pages can be posted at WoWWiki - that is, blogs will be treated more like articles than like an extension of user pages here. For more information, see this discussion.
If you have any questions or comments, feel free to post them!