What FNAF 3 could be about Part 2

I was just on Scott's website and I saw this

FNAF 3 might be after FNAF 2 when they scrapped the toy animatronics. I'm still confused. I thought that FNAF 2 was the 3rd Freddy Fazbear Pizza restaurant. Maybe my theory was wrong. Or that is the box when they were building the animatronics.