Online reports claim that Apple will not announce a flat-panel iMac at Macworld Expo next week.

The much-anticipated iMac revision is "simply not ready for release", claims MacMinute.

The Web site's sources claim: "The company will be rolling out iMacs with faster processors in their present form-factor."

Apple would not comment on the rumour, saying: "We do not comment on rumour or speculation regarding unreleased products."

Recent stock-price movements on Nasdaq imply that analysts remain confident in Apple's performance in the current quarter. Pundits are concerned that iMac sales may suffer if the product's market-leading form-factor is not refreshed. Apple has sold over five million iMacs since the product was launched.