Wonder what he did?

Less than 24 hours after announcing the Top 24 on Idol, there's ALREADY been a change to the line-up. Check out the story about it from Us Weekly...

Hold up, American Idol fans: there's been a last-minute switch to the top 24 list of semifinalists revealed in full on Wednesday night's episode.

In statement, a rep for Fox says, "It has been determined that Chris Golightly is ineligible to continue in the competition. AMERICAN IDOL contestant Tim Urban has replaced Golightly as part of the Top 24."

Though Golightly was seen making it through to the Top 24, he was noticeably absent at the end of the episode when the contestants were named individually -- and replaced by Urban, whose entry into the Top 24 was not aired. His name and face were shown at the end of the episode.

The network has not yet explained why Golightly is "ineligible." But when a Twitter follower asked Ryan Seacrest about the switch, he explained vaguely, "must have broken a rule or maybe had previous deal."

In case you don't remember who's who... this is Chris...

And this is Tim, who is replacing Chris, for reasons unknown (for now!!)...

Are you mad, happy, sad? Comment and tell me what you think of the change!