After the conclusion of the second season, changes to the program included the creation of additional audition episodes in the broadcast schedule, the involvement of quarter-finals in the competition, and doubling the number of participants that advanced from the boot camp stage.
Following the previous season, auditions took place in five major cities: New York, Chicago, Los Angeles, Dallas, and Atlanta.
The remaining changes included an expanded number of participants for the "Las Vegas Callback" stage of auditions, along with cosmetic updates to the program.
Alongside a new title card, the judges' table and the red "Xs" were re-styled to match the design of those used in Britain's Got Talent.
Forty of the participants who auditioned for this season secured a place in the live quarter-finals, with ten quarterfinalists performing in each show.