This could very well be set in the world of the other films. In fact, it probably is.
I hate the word reboot. It has so many definitions and every time it's used it's all people cling to.
A reboot can exist in-continuity, it can be a spinoff, it can ignore just certain parts of a series, it can ignore everything and be a complete remake, it can be completely ambiguous on the matter, it can be a new adaptation...
The word doesn't even phase me anymore. I don't understand why some people get so hung up on it.