Really? TUAW seems to disagree.
http://www.tuaw.com/2011/02/16/the-four-inch-iphone-display-doing-the-math/ Granted that only 1mm leaves on each side, which may include the antenna that sticks off slightly. That may even be including the volume buttons on the side. Regardless, I think Apple would be wise to go 4" and same aspect ratio. If they need to increase the width by a mm or two, so be it. If they can keep it the same size, even better!
my iP4 will hold me off till iP6 so yeah, I'm more interested in iOS5. But I think I would be more interested in iOS5 regardless. iP5 will be IMO a fairly predictable jump, and nothing too terribly necessary. Larger screen, more RAM, better cameras, LTE (doubtful), A5, better battery life... The one wildcard would be NFC, but who knows if that will happen and who knows if NFC will even take off at this point.
the possibilities seem endless for iOS5. Even if it only gives us things that we could already do jailbroken (widgets, better notifications, etc) it will still be a really good thing. I think there are also a lot more unknowns about iOS5, I mean really we don't know ANYTHING! haha.
Lastly... iOS5 will be coming to my iPad 2
🙂 Double the love for iOS5