Looks like Lords of Shadow 2 is 100% confirmed as well, even though we pretty much guessed that last week. Here's a blurb from Nintendo Power.
"(Mirror of Fate has a) climax that will set up the events of Castlevania: Lords of Shadow 2."
Now, the article doesn't state that Lords of Shadow 2 is coming to Wii U. It simply confirms that the game exists. Let's hope we get this rumor fully confirmed by seeing Lords of Shadow 2 on Wii U! Thanks to Alejandro for the heads up.