It's the last film in the Paranormal Activity franchise, and they're going out with a bang, showing you everything the original films artfully kept hidden. Is this a good idea? I'm not so sure, but the opening bit in this new trailer, with an old VHS tape responding to the people watching? That is fucking awesome.
I still haven't seen The Marked Ones, as the last in the main series, Paranormal Activity 4, left the worst taste in my mouth. It just stank, and it was a huge bummer on the heels of 3, which was actually incredibly inventive and fun. 4 was a tedious slog into mythology that never made a lasting impression, although the very ending was pretty cool. Still, I thought I was done with the series, but knowing this is marketed as the finale... well, you won, marketers. I'm gonna go see it. Even if I'm not wild about the CGI overkill. I liked when the series used CGI to make things invisible, not to create ghosts and monsters.
Paranormal Activity: The Ghost Dimension opens in October, of course.