http://www.marvel.com/news/movies
This January 27th release will be made up of two stories, "Hulk Vs Thor" & "Hulk Vs Wolverine".
Quoting the article: "These dark and violent showdowns have been seen in various forms throughout Marvel comic book history, and the rematches have continued to thrill comic fans ever since. Now Marvel and Lionsgate have taken the two epic comic book battles and merged them into two heart pounding tales on one DVD release that stays true to its comic book roots."