Of all the iPad 3 rumors, the most persistent is that it will have a higher resolution display than its predecessors, perhaps 2048 x 1536. Now, evidence in the form of an alleged iPad 3 replacement panel attained by MacRumors just about confirms the screen spec bump.
Though MacRumors was unable to power the 9.7-inch display panel, they were able to snap a close-up of the pixels, and compare it to the iPad and iPad 2 display, which has a 1024 x 768 resolution. And indeed, the purported iPad 3 display appears to have double the number of pixels per small section of the display.
A 9.7-inch display with a 2048 x 1536 resolution has approximately 264 pixels per inch (PPI), which is higher than any mobile tablet currently on the market. Most 10.1-inch Android tablets top out at approximately 150 PPI, while the T-Mobile SpringBoard, has 216 PPI with its smaller, 7-inch, display. The iPhone 4S and other high-end smartphones have 300+ PPI counts, which is the limit many image experts claim the human eye can discern.
Rumors have March 7 as the date Apple will announce the next-generation iPad. Other rumored specs include 4G LTE support and a more powerful A6 processor, which may or may not be the a quad-core system on a chip.