iPad 3 Rumors: The upgrades we want
Whether the A6 will be a quad-core chip remains unclear, but we should get all the details in March, with Apple boasting of, say, "4x faster graphics than iPad 2."
Improved battery life
Whatever the case may be, it's likely that the iPad 3's battery life will at least match that of the iPad 2. Apple has never yet released an iPad or iPhone that had worse battery life than its predecessor.
Siri
Improved sound
4G
Of course, a 4G connection would probably mean an even higher monthly bill than the 3G data plans currently offered on iPads. And data caps as well.
Better front and back cameras
There's strong speculation that both the front and back cameras will be significantly upgraded, with the back one (the one you'd take pictures with) getting the iPhone 4S' camera and the front going to HD for FaceTime HD video chats. A flash might be integrated into the rear camera as well.
Thinner, lighter design
Higher-resolution display
Rumor has it that Sharp may be supplying the LCD panels, which will offer QXGA resolution with a pixel density of 264 ppi (300 ppi is considered a Retina Display). By comparison, the pixel density of the iPad 2's screen is 146 ppi. That's obviously a big jump if those numbers end up being real.