The movie premiered in a couple of festivals and I think it will be released in theaters in the Netherlands on the 12th of July.
It looks to be quite erotic, maybe sort of like Bang Gang with a lot of youngsters and sex parties, but the film might actually be explicit.
At 1:40 on the trailer a review says it is "Super intense and explicit", and on one review I found it says the following:
https://cinemagazine.nl/wij-2018-recensie/ (using google translate):
"Just like in the novel, the 'We' style also goes beyond content. Anyone who wants to be shocked by completely derailed youngsters can have fun: Eller shows the most explicit scenes without looking or blushing and looking away is almost impossible. Three extreme scenes put viewers to the test with some form of sensitivity."
Given that it is a European movie, I wouldn't be surprised if it actually is explicit. Maybe something like Sexual Chronicles of a French Family!
Most of the actors are actually amateurs and I cannot find anything under their belt, so I am feeling quite optimistic!
So let's wait for a couple of days until its release, and hopefully we will have more information!