I wouldn't count yourself out just yet! The person implied with POI that it would be the professor they would work under, but past years it seems like the Associate Dean called all of the accepted applicants on the same day. I would be surprised if they would call everyone on a weekend date too. We never know until we see the result! You got this!
Where did you see this? And they posted about it over the weekend or they received the call over the weekend? I am sus about someone getting a call over the weekend...