'Idol' changes its tune a little


Fox is readying to announce some "American Idol" format changes.

The tweaks have been rumored online thanks to a memo leaked to a fan site. The network is set to reveal the plans today and hold a news conference with executive producer Ken Warwick.

The changes include:

The network doesn't expect the changes to result in a ratings reversal for the 6-year-old show — which has withstood broadcast's overall ratings erosion better than most — but hopes the shake-up helps stem whatever audience drain might otherwise occur. (partialdiff)