After the success of The Walking Dead, it has been speculated that Marvel may attempt to jump on the zombie craze by moving forward with a movie adaptation of Marvel Zombies. Robert Kirkman previously mentioned that he hadn't been approached about it and recent comments from Kevin Feige suggest that we won't be seeing a Marvel Zombies movie any time soon:
Via EW: "I know… Zombies is such a funny thing because its such a cool comic and it’s such a cool idea, but the bigger profile becomes what starts to happen [with fans]... Are you going to draw figures in chalk with your 3-year-old with Hulk eating someone? Or Captain America with his brains coming out of the top of his head? Probably not"
It doesn't look like a Marvel Zombies movie is in the cards yet, but Marvel recently regained rights to Blade and Ghost Rider, so they will eventually get into the horror side of the Marvel universe. We'll report back on any updates, but it could be quite some time before this is given real consideration.