Nah, i don't think so. Guess that's a fake made with AI.
Pam was supposed to find Mark dead in the shower, which would have been the cliffhanger.
Why should they film Mark looking in that strange angle (to the wall?), with the shower door open when we were supposed to just see him dead?
Makes no sense to me.
Also, the shower head is in the wrong location and the doves on the tiles don't follow the correct pattern. They are ending with a white dove in the upper row in the corner and a dark dove in the lower row.
In the picture with Mark it's the other way around. Plus, those pink tiles only appear in the scene where they shot Patrick on another location, their "real" bathroom had mostly white tiles. So why would they film with John Beck in that same secret location as with Duffy, when none of the other actors apart from Duffy were supposed to know about that scene? Devil's in the details.

But nice try, whoever did that.