Apple today announced its revamped iMac lineup at a press conference held at their Cupertino, California headquarters, featuring a new aluminum-and-glass design, along with a redesigned keyboard and glossy displays.

The new and slimmer iMac comes in a 20-inch model for $1,199 or $1,499 depending on configuration options and a 24-inch model starting at a base price of $1,799. The new systems feature Intel Core 2 Duo processors clocked from 2.4 to 2.8 GHz, ATI Radeon HD 2400XT graphics cards, up to 4GB of 667 MHz DDR2 SDRAM memory, built-in 802.11n wireless networking, Bluetooth 2.0, and up to 1TB of hard drive storage.

The long-awaited refresh of the iMac lineup should further increase shipments, which have been doing quite good lately, with Macintosh unit shipments growth of 33% in its fiscal third quarter more than twice the overall rate of personal computer sales growth.

Second up, Jobs announced the new iLife 2008, which now includes iPhoto, iMovie, iWeb, iDVD, and GarageBand, introducing a variety of new features. The new iLife digital lifestyle suite will be shipping with all Macs starting today or you can buy it separately for $79. Apple also announced the new iWork productivity suite which in addition to Pages, a word processor, and Keynote, a presentation program, finally adds a spreadsheet application called Numbers.