Fox hasn't said anything and Steven Tyler himself remains mum.

But Aerosmith bassist Tom Hamilton has confirmed to The Newark Star-Ledger that his band's frontman has officially signed on as an American Idol judge.

"Steven is doing American Idol. The ink is dry on that," said Hamilton. "We'll have to work around his schedule for a new record. I hope it doesn't hurt the new momentum we've built up on this tour, because that's been so important for us as a band. But I wouldn't want to be the one standing in the way of this for him."

Hamilton added that millions of people will "see another side" to the iconic singer, describing Tyler as "witty and entertaining."

With the Aerosmith legend on board, producers must now decide the fate of Kara DioGuardi. Sources say Jennifer Lopez might still be a candidate, despite reports that she demanded too high of a salary for the job.

We're still pushing for Jessica Simpson because, let's face it, who would not tune in each week to watch her at the judging table? She'd made Paula Abdul look intelligent and insightful!