MacRumors.com

Despite the seeming lull in product releases in the past few months, according to sources, Apple has been hard at work on upcoming releases...

Most specifically, sources report that a PowerPC G5 based iMac is in the works and should represent the next iMac revision.

As with many of Apple's revisions, sources are unable to provide a specific timeframe for release, but iMacs are due for a revision. The iMac was last updated in November 2003.