Do offer calls come out at once?

Had my final round this week, and the MD mentioned I’d hear back within a week or two. He said they were planning to bring on about five interns. I know one person has already received an offer-she interviewed earlier than me, and her timeline for the offer was about a week and a half.

I’m wondering, does this mean all the offers are already out, and I might be waitlisted? Or do they make decisions in order of interview sequences? BTW, at the end of my interview, the MD said, “Hope to see you again.” Not sure if that’s a positive sign.