I've found the interview process has changed over the last 4 years.
Back on 04, my interview was quite long, 1.5 hours roughly. We covered my application, my extra ciricular activites, hobbies, grades etc. Then she asked me some mock command scenarios, and how I, as a potential officer, would handle them. She also asked me about current events, where Canada has served overseas in the past and presently, what type of aircraft we have, and their roles (1st MOC choice was pilot). Also asked about the MOC training paths and what the jobs intale on a day to day basis.
The following years became quicker, I think that is because we had been though the big interview, and just needed to confirm what was in my file. This past year, I was asked about the specific MOC's I put down, and their training process.
This year we didn't actually do the usual PT test (stairs, situps, handgrip etc). I spent the whole week prior trying to rush my self to get back into shape, guess its for the best becaues I was pretty sore lol. Althought for the 2nd half of the medical, after the vision/hearing, the doctor asked me to do 20 pushups.