Re: Paranormal Activity 4: News, Discussion, etc
This would appear to be the sequel to the first one. The previous two kind of were set up to evolve and build the mythology further. Kind of an unique way of developing a franchise. This would seem to be the pay off fans have been waiting for.
We haven't heard much from the production because frankly...there hasn't been much news at all. Dianna Agorn (Glee) was cast about a month or so ago, I think other than that we've not had much casting information or real news at all. This was pretty much the norm for last year's "Paranormal Activity 3". They waited until the summer time to start their marketing for the movie. They've released a banner on their facebook page which is just the movie title you see in the teaser preview.
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Ignoring the The Last Stand since 2011.