New iMacs Released [Update]
Photo from Appleinsider.com
-Up to 2.8 GHz Core 2 Extreme Processor
-Up to 4 GB Memory
-ATI Radeon HD Graphics
-Up to 1 TB Hard Disk
-Wireless 802.11n and Bluetooth 2.0
Also, Apple indicated that the keyboard that was previously leaked is indeed the new keyboard for the iMac.
Update: Appleinsider has posted an extensive gallery of images of the new iMacs.