Correct. I have not gotten anything yet, but last year they sent out rejections via mail and email (I don't remember if it also showed up on the application portal) so there's where to look. To answer your other question, at my audition they said that end of day callbacks would be very limited this year, so I'm inclined to believe that they mean it when they say it's not indicative of your status. They said something similar last year and mentioned they've accepted plenty of students who were not called back at the end of their timeslot. If you got one, that's likely a positive sign, but I wouldn't write it off if you didn't get one. I'd expect if you aren't called back for the weekend callback however, that it's likely you won't be accepted.