Via: Daring Fireball
Rumors are rampant that the upcoming iPad 2 will feature a higher-resolution retina display. Long story short: No, it won’t.
The current iPad has a 1024 × 768 display; a double-resolution retina display iPad would have a 2048 × 1536 display. At the same physical size, that would be about 260-270 pixels per inch. Apple, I suspect, could legitimately call such a display a “retina display” on the grounds that the typical viewing distance for an iPad is further away from your eyes than with an iPhone. (The iPhone 4 display is around 330 pixels per inch.)