OMG. The picture is almost EXACTLY the same sans Simon Belmont. The angles and position of the balcony. The the metal gate above the window behind dracula/strahd, the eves of the crenelates on the wall, the gargoyles on the balcony, the conical, tiled roof, tower on the right, not to mention the pose/clothes of strahd/dracula himself. Only their head is looking a different direction.
This is DEFINITELY a copy of one or the other (not sure which came out first)-- it cannot be a coincidence.
It's not.
A link to a wiki about the artist of the Ravenloft cover.
http://en.wikipedia.org/wiki/Clyde_Caldwell
Alot of his work was plagiarized by a cult member named "Tamar", why NES got a cultist to do the cover of one of thier games I don't know but I bet he worked cheap.
I can't find a refrence though that this "Tamar" is the cover artist though, if someone could find that and post it I would be interested. I have dial up so that 13 minute long flash here might even compare the images, it would just take me all day to download it.
http://www.xfamily.org/index.php/Plagiarized_art
A little back on target, I don't know who came up with the idea first of making undead reanimate after first killing them, but it sure is fun in video games and I have done it as a homebrew monster for my game before. I do love the idea that some of the best ideas from any medium novels, movies, or video games are making the way into 4E.