Four different sequels are going to be released in the month of July alone, including "The Smurfs 2"; "Red 2"; "Grown Ups 2" and "Despicable Me 2." Not that we aren't accustomed to Hollywood's sequel mania by now. In fact, long-running film franchises have become such a mainstay, studios are able to plan their movie release dates years into the future. Want to know what you're going to be watching in 2018? Here's a hint: You've already seen it.