Halloween vs. Hellraiser: According to a recent report over at Creature Corner, during a Q & A at Texas University last week, 'Pinhead' himself (Doug Bradley), spoke about Dimension Films' seriousness about taking the proposed match-up on:

Bradley does say that Dimension are in the planning stages for Halloween VS. Hellraiser film, and want to try and have it out by next Halloween.
Cinemark Movie Club
Brian B.