2048 x 1536
I'd love that on a 14" to 16" laptop. Or on 11.5" x 11.7" active area eBook so as to read US & European technical PDFs actual size.
I'd have thought that with 16M colours, and sub-pixel addressing that you only need 120dpi to 150dpi on any tablet.
The iPad3 is 9.7" so it's about 264 dpi which just a waste of power.
Un- Aliased B&W text needs to be 300dpi to 600dpi to look really sharp. 180dpi pure white or black looks jagged. But if you anti-alias then you can use 1/4 resolution, so 150dpi is nearly as good as 600dpi. Laser printers can't as they either put a dot or not. But eInk can do 16 shades (enough) and LCD/OLED about 256 shades.
So decently done 133dpi LCD can look like over 500dpi. Add subpixel addressing and you nearly double the effective quality.
264 dpi (the iPad3) needs nearly 4 times the TFT power as as 132dpi as it's four times as many dots.
Apple egotisim wining out over common sense.
Add visual acuity. Not all iPads are owned by teenagers. Over 80% of adults won't see improvement above 150dpi for anything shaded. Why do you think colour photo resolution on books and magazines is about 150dpi?
Then how many adults should be using "reading glasses" and are not:?
People seeing my 15" 1600 x1200 screen laptop are first:
Staggered by resolution.
can't believe it's over 10 years old.
It's 133.3dpi and yes, sub pixel addressing works to make text look clear and smooth (though the default settings are not the best, but you can manually "tune" it).
I'll buy a tablet when it's eInk and 8.5" x 11.7" active area at more than 120dpi.
Most of the cheap 7" androids are opposite extreme to iPad3 with having a useless 800 x 480 resolution. My 4.3" Archos is 800 x 480. 16:9. It's too chunky for portable and too small/low res for eBook or Internet sensibly.
I think a 3:1 format might work for a phone for scrolling pages 1440 x 480 Like LG Chocolate shape,
But 4:3 is better than 16:9 for a larger Tablet. Apple do have that correct, though for large "eReader" that would give 11.7 x 8.775 (US letter size needs 8.5" and Eu A4 needs 11.67")