Earlier today, Joshua Topolsky wrote:
It seems likely that the device will land around April (perfectly timed with the 12-month product cycle Apple enjoys). And what about that device? From what we’ve been told, the thinner, sleeker tablet will sport a new screen technology that is akin to (though not the same as) the iPhone 4’s Retina Display and will be “super high resolution” (unlike reports to the contrary). The device will remain at 10 inches but will now feature both front and rear cameras (not a huge surprise), and… there’s an SD slot.
Well, it looks like he is right in that the second generation iPad will have a “super high resolution” display. The Wood Tile@2x.png shows that the iPad 2 resolution would be 2048x1536 pixels, which is 264 pixels per inch (PPI), whereas if the iPad 2 were to have a “retina display,” you’d be looking at something with 326 PPI. The current first generation iPad is 132 PPI. Apple will effectively be doubling the PPI of the iPad 2. Is that “super high resolution” enough for you?
See the Wood Tile@2x.png below. It’s current dimensions are 1536x800 pixels. For comparison, the previous Wood Tile.png in iBooks 1.1 was a mere 768x400 pixels.
Update (1/15/11): I didn’t realize this until afterwards, but yes, even at 264 PPI, the iPad 2 may still be considered a “retina display” because less pixels are required for the “retina” effect to be achieved because the iPad is held farther away from the eye than the iPhone when used.
Update 2 (1/18/11): John Gruber suspects that the 2048x1536 resolution is too good to be true and that we’ll probably see a same resolution iPad 2 this Spring. The iPad will eventually have a “retina display,” just not now.