For the iMac, sources say Apple will bump the low-end configuration from 1.6GHz to 1.8GHz, while the higher-end configurations will receive 2.0GHz processors. The all-in-one desktop computers may also sport improved SuperDrives and more standard memory, according to reports.Read more at Apple Insider
Apple to launch new iMac, iBook and eMac computers

Apple Insider wrote that Apple will introduce new version of all of its consumer hardware products next month. This includes new iMac G5, iBook G4 and eMac G4 computers.