It
looks like last year the deadline was March 14, 2016, so I'd imagine it's around the same time for this year. For comparison, the
GMED program's deadline is March 24, 2017.
I don't think it's too early to apply and I wouldn't necessarily say it's pointless because at my interview day, they mentioned that if you're interested you should apply even if you haven't been accepted yet. They explained that your application for a curricular program will be considered if you're accepted so it's in your interest to have the app already submitted. To be safe, you should call the office and ask. Good luck with your interview!