Apple CEO Steve Jobs’ Macworld Expo New York keynote is nearly over. Jobs announced a revision to the iMac with three new models: 500, 600, and 700MHz for $999, $1,299, and $1,499. New Power Mac G4 systems were also announced at 733, 867, and dual-800 MHz configurations. The 867MHz and dual-800MHz models ship with SuperDrive. Price points for the Power Mac G4 are $1,699, $2,499, and $3,499. Apple also announced Mac OS X 10.1, which will be ready in September, as well as iDVD 2, which will ship later this year. Finally, Apple announced that four new Apple retail stores will open in August. For full details from the keynote, see our live coverage.