Traditionally there have been three rounds. First was written questions, second more questions and a video submission (although I think that was just a headshot/photo in the early years), third a telephone interview, then the final panel was announced. Last year, Gary's first in charge of the panel, he added a "Round 3a," in which we answered an actual question previously asked of the panel. I got through all 3 1/2 rounds last year, but did not make the final cut. The FastPass+ to Round 2 this year was a nice reward from Gary.
So...that's how it's been done in the past. Gary has hinted at changes for this year, including additional rounds and more video (and something to do with rice...). It sounds like some changes have already taken place with Round 1, such as the request for a photo and a sample question. (Haven't seen R1questions yet because of the FastPass, hoping someone will post them! Dying of curiosity!!!) We'll just have to see what Gary has cooking!