i think the bottom of it where there are fan and Freddy(OR MAYBE EVEN FREDBEAR!?)plushie on the desk and the Mangle behind them, my guess is that it's office from the DLC, like Fnaf 2 office but from JR's universe, like we saw Fnaf 2 animatronics but from JR's universe. I mean, this art is some kind of teaser to office from the DLC i think.