Good Gear Guide
In Pictures: First look at the new iPad - What's ...
New: The display
Existing iPad apps will run without changes and without compromise on the new iPad. The new screen has 40% better color saturation than iPad 2, according to Apple. Saturation is the "colorfulness of a color relative to its own brightness," so the most saturated color looks the purest.
In Pictures: First look at the new iPad - What's new, unchanged and still missing