We were a tad disappointed to find out that the Nokia 9 will have a 5MP selfie camera. The disappointment at the resolution remains but it turns out that its a dual 5MP camera, which does make it look a little better.
The FCC listed a Chicony CKACE16 module and going over to the manufacturers site, we see that it lists it as a dual camera (but shows an image of a single camera... were assuming that the photo shows the wrong model).
The camera has autofocus (yay!) and an f/2.0 aperture for one of the modules, the other one has an f/2.4 lens. Its that f/2.0 module that is responsible for video 1080p.
The limited spec sheet doesnt go into details what the other module does does it have a black & white sensor or a different field of view? These things should be cleared up early next year when HMD officially unveils the Nokia 9 (and perhaps a new Nokia 6 too).