is there going to be a paranormal activity 4
There is rumor there will be a Paranormal Activity 4 in October of 2012. However, there hasn't been an official announcement of the next in the series. For more information, see this link: http://www.dreadcentral.com/news/48262/paranormal-activity-4-haunt-theatres-next-october.
Yes, it has been officially announced that there will be a Paranormal Activity 4. The release date for the film is October 19, 2012. For more information, see this link: http://www.cinemablend.com/new/Paranormal-Activity-4-Gets-Release-Date-28647.html.