'Poltergeist' Reboot Will Be A Sequel
Firstly, the Kenan-directed Raimi-produced reboot – much like the “Evil Dead” remake – exists in the same world as the previous “Poltergeist” films. So while it is a ‘reboot’ of the franchise, it’s also somewhat of a sequel – taking place years after the Freeling’s were ran out of town.Source: Moviehole
In one scene in the new film, the kids’ find some things behind the sliding panel in the attic. Yep, you guessed it – they find some of the Freeling’s possessions, intentionally left behind. There’s the Star Wars bed sheets (from Robbie’s room), a black-and-white TV set (why, of course!), and some Christmas decorations.