The third-generation of Apple's smartphone, the iPhone. The iPhone 3GS includes a 600MHz CPU, 256MB of RAM, a 3-megapixel camera with autofocus and video recording, and a digital compass. The 3.0 software that comes bundled provides many features that other smartphones have had for a few years.
It is physically identical to its predecessor, the iPhone 3G, save for the new color-matched lettering on the back.
Thousands of techies across the US: Dammit, AT&T, no MMS on the iPhone 3GS at launch? WTF!