'The Voice' Season 3: Expect changes to the rules and to the blind audition rounds

Jermaine Paul only just won the second season of "The Voice," but NBC bosses are already looking toward Season 3. With "The Voice" being their most successful show of the season, it's no surprise that it had a significant presence at their NYC Upfront on Monday morning. After Katharine McPhee and Megan Hilty from "Smash" performed, "The Voice" judges turned their big chairs around.

Adam Levine, Cee-Lo Green, and Christina Aguilera were on hand -- Blake Shelton, as NBC president Bob Greenblatt explained, was celebrating his wedding anniversary with Miranda Lambert.

Greenblatt revealed that NBC's successful summer reality contest "America's Got Talent" would extend into the fall due to a break for the Summer Olympics, and would be used to launch Season 3 of "The Voice" on September 9, 2012.

Greenblatt noted that they have "no illusions" about beating "American Idol" in ratings -- though it does beat "Idol" in the 18-34 range -- but the network is proud of the "integrity of the show," calling it the "cornerstone of the future" for NBC.

In Season 3, fans can expect some significant alterations to the game, particularly in the case of the blind audition weeks. Throughout the season, producers plan to employ "tricks and turns in the rules" -- not the least of which will be the return of the spinning chairs and the "I Want You" buttons at a later point in the season.