If you haven't noticed it already - Midway aren't doing very well at the moment. That is why they have entered a partnership with Ubisoft regarding the "sales, marketing, and distribution of the title in North America, South America, Australia, New Zealand, France, Germany, Austria, Ireland and the United Kingdom". Midway will still handle the game elsewhere, but I guess that also means it won't be handled at all in the Nordic region for example where Mortal Kombat vs DC Universe hasn't officially been launched.
Below is an interview from Midway Gamer's Day 08 on Wheelman.