Originally Posted by afv011
Probably not. A 7.85" retina would be yet another screen resolution, so it is more likely to be 1024x768, like the iPads 1 & 2. If that's the case, it would have about 163dpi.
To be retina (about 256 dpi), it would have to be 1600x1200.
So without inventing another iPad form factor (it has got to run existing iPad apps without any letterboxing or scaling), they'd have to double to 2048x1536. So 330dpi or more.