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.