First image gives us a clear view of the same box from the teaser poster. I think it's safe to assume a new meaning to this: all the FNAF 2 "Toy" Animatronics are out of commission now. We likely won't see them I would guess. We can also see Balloon Boy and Mangle in the box, and what appears to be Foxy's arm which could mean he is out as well. I actually have one more image to back that up.
More importantly, we are also shown an interesting pair of children's drawings. Both of them feature the inverted white pupil, on the left Bonnie, on the right Freddie. Bonnie appears to be giving the child a cupcake with a very weird, creepy look on his face. Freddie appears to be surrounded by at least 3 children, and also has a very weird look to him. I think we may be seeing the birth of new animatronics. Given that past lore featured 5 children and a sixth crying child, these new children surrounding something other than a Golden Freddie suit with faces of ill intent seems to indicate perhaps that we will have 4 new threats. Last thing I want to talk about is the environment. This location looks very old, which along with the old heads tells me that this is probably after the first game. Also we get another fan.
The only important thing I can make out here is what appears to be the original game's Bonnie. Other than that we have a quick view of the floor plan in this location. Noteably, there is no weird symbol that could lead to a music box, so no more stressing on the Marionette... at least not the way you would before.
This is important! We can see some of what might constitute the gameplay in this game. We have 3 systems to deal with: Audio, Camera, and Vents. The vents are very present in the first image, and we're sure to be stalked through the slits. Audio is interesting, because it seems to mean that sound will play a much bigger role this time around, perhaps to track certain bots. Camera is a given.
Here we can see the new animatronic, who I will go into much more on the last image. What I want to talk about HERE is the head of Foxy mounted creepily on the wall. I would say that this is pretty interesting, and to me says that Foxy will not be returning this time around. At least not as we know him.
I've taken to calling this Golden Bonnie, and I have a theory about just what it is. This is clearly a rabbit, like standard Bonnie, based on the footage in the trailer where you can see the ear on the left extends fully. It is my belief that this is a monstrosity made by grafting the old Gold Freddy suit onto Bonnie skeleton. As a result, it doesn't work right. This is because it knows it is wrong and can feel it. It's supposed to be Freddy, but it's been forced into an unnatural shape, and has even had its snout cut back crudely. This may be the most disturbing of all the animatronics for the torture it must feel in there. Driving it insane.