It was again hosted by Ben Mulroney, with Farley Flex, Jake Gold, Sass Jordan and Zack Werner all returning as judges.
New events introduced that season included the Help Idols build a house and the Kraft Confidential with David Kerr.
The final episode of the season was broadcast on September 11, 2007, when Brian Melo was crowned Canadian Idol.
CTV explained on its website that many competitors have indicated they feel more comfortable in an audition setting by accompanying themselves on an instrument.
In Tier 2, the competitors will audition to a producer of the show, where they will be asked to sing a minimum of two songs.
The successful auditioner will receive a Blue Ticket, and will need to return to the registration desk to register for the Celebrity Judges round.
By assigned order of time on successful auditioner's registration paper, they will be called into the final round of audition where they meet the Canadian Idol Celebrity Judges Farley Flex, Jake Gold, Sass Jordan and Zack Werner.
The Gold Ticket receivers are asked to remain absolutely silent, or they may face possible disqualification due to fairness purposes.
One original member of the Top 22, Ritchea Hodge, dropped out for personal reasons and was replaced by Scarlett Burke.
It is a fundraising campaign that will help build the first North American Ronald McDonald Family Retreat at Bear Mountain Resort in Victoria, British Columbia.