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Nope, just that any seat offered on the 1st of December has expired unless a deposit was placed. Therefore, if the class hasn't been filled, schools will be able to send out offers cause they know how many seats they have to fill.
Interviews are school specific, you could call the schools you are seeking interviews. I actually called one school, they said my app won't be reviewed for a month, got an invite the next day. Showing some interest can really help. I also had called and got a denial at a school. It can be either or. Schools probably review apps every 3-4 weeks for admissions, I am not positive on interviews though.