Here's more info from one of the show's publicists, Sara:
For season four, the show is planning a massive nationwide audition tour beginning in January, 2009. The auditions will be traveling across America to over eight major cities including New York, LA, Chicago, Washington, D.C., just to name a few.
What makes the show unique that it has brought the variety format back to the forefront of American culture by showcasing the hottest performers from across the country. Season's 3 winner, insurance salesman/opera singer Neal E. Boyd from Missouri won the money and achieved his lifelong dream to headline on the Las Vegas Strip with a show planned for the MGM.
Any talent goes. We want to see anything and everything…No matter how zany, bizarre or unusual others may think your talent is, on our show, it could make you a star. So Wyoming, do you have talent? If so here's your chance to show America! To pre-register for an Audition and for more information on AGT, please log onto www.nbc.com/agt. If you are not able to attend one of the America’s Got Talent audition cities we still want to see you shine! Please visit www.NBC.com/agtas soon as possible for instructions on how to submit a video of your performance. Remember to submit your video audition as quickly as possible for your shot at being America’s next ONE MILLION DOLLAR WINNER!