I wonder at what kind of resolution we will no longer need anti-aliasing. Did they provide any Retina screenshots with AA off? You'd think that with small enough of a pixel it would no longer be necessary.
There is no clear cut answer to that. Even at 10,000ppi you can still get visual artifacts without anti-aliasing. The problem is pixles are averaging a single point source over a 'full' pixel so with some patterns they can become vary sensitive to slight motions. Think chain link fence, all the pixels could be on the fence and it looks solid, or between them and it looks clear, and if your rotation it can swap between them.
Not there yet. I turned off AA in the Terminal and it looks smooth, but not completely. If I use a lower scaled resolution like 1440x900, then it looks even smoother, but again not completely smooth. So I guess an even higher dpi is needed. It would be interesting to see non-antialiased fonts on the iPhone which has a much higher dpi.
