Paranormal Activity 3 - thoughts on the release

I was just looking at the release dates for Paranormal Activity 3 on the imdb Link and I noticed that the movie has pretty much a simultaneous release across the world (21st October), except for Japan, Germany and Finland where it is released just over a week later. You need to consider why movies are beginning to release across the globe at the same time, what technology is allowing this to happen, and why movie companies may see this type of release strategy as fighting the battle against piracy.