"Here is how it breaks down:
Xbox 360 Elite $479.99 now $449.99
Xbox 360 System $399 now $349.99
Xbox 360 Core $299.00 now $279.00
Plus, the Halo 3 Special Edition Console price has been announced as $399.99
These new prices are effective as of Wednesday, August 8th in the U.S. only."
Source:
Press Release
U.S. only? That blows for our friends in Canada.