Hey Jason, I deleted my previous comment to give an explanation.
Soooo basically ! The last time I updated the game I was pretty well sick, so I didn't pay much attention to what I did due to fatigue and screwed the placement of the end credit in the demo so somehow you were able to have an access to day 4 so yeaaah' ! Everybody who has downloaded the last update got spoilers of day 4.
I'm embarassed, really.
I will update that.
Thank you again Jason.