It's a sequel. It's no different than how the last "Rambo" film was called just that, instead of "Rambo 4". It's been so long since the last "Predator" film, that they ditched the number sequence. Come on, guys. As many slasher movies as you folks have probably seen, and you can't realize that? It's just as much a reboot as "Rambo" was.
As for Nimrod Antal, I'm happy with this news. He's certainly better than the Strause idiots.