I just watched the trailer for this. It looks interesting. I try not to associate it with The Exorcist in any way, but that'll depend when I actually see the movie. Hopefully Anthony Hopkins' presence in this film will bring it much credit.
In the trailer I watched (trailer 2, I believe) they used some music from Bram Stoker's Dracula (when Dracula renounces God after finding Elisabeta dead in his castle), which also happened to have Anthony Hopkins in it.