Re-posting my comment in the correct thread. (Sorry mods)
That rumor took longer to hit the boards than I expected.
I just don't see this actually coming to fruition...at least not how the title suggests it would happen.
I know everyone is thinking this will be "Jack the Clown in Halloween Horror Nights: The Movie!!!".
In reality, IF (yes, I bold, underlined, italicized, AND capitalized that) it happens, it will probably be a lot closer to something like Hell Fest or Haunt.
The fan base just isn't there for a full fledged HHN lore movie.
On top of that, as stated earlier in this thread, a lot of what is created for HHN draws inspiration from other creative avenues, especially Jack.