I'm prepared for disappointment.
If the screen is 4.8" like some have speculated, I don't want one. Way too huge. May as well have a tablet. I thought the SII was too large but have come around to 4.3" and if it was 720p it would blow the market away, competing with the xperia s for display pixel density. But if you have a lumbering great screen the pixels are bigger...
4.3 -4.5" 720p SAMOLED+ would be the ultimate form factor, I believe - even more so with the phosphorescent green pixel we've heard about.
You won't see Apple going with a huge screen size with bigger pixels. For me the only spec that would compensate for a 4.8" screen would be 1080p.