...people with iPhone 4's will say it's a lame upgrade and they're glad they'll be getting the LTE release next year...
...the 3G and 3GS crowd will say that the 3G network is the greatest thing to ever happen to man and anything beyond it would just be shameless excess...
...this year's model will be called the same number as the iOS that comes pre-installed on it... Hmm...
...oh and there will be some (mostly) irrelevant manufacturing issue that will get blown completely out of proportion.
For the record I've got an iPhone 4 and I'm glad I'll be getting the LTE model next year... I hope they call it an iPhone Pro just to piss you 3GSers off! 😛
How about this... I got an iPhone 4 and I'm not sure we should be happy that our upgrade (probably) will get LTE.
Think of it this way, AT&T will probably force you off the grandfathered unlimited if you get the 4G network and will insist that if you get the new phone you gotta get a 4G plan (hey, Sprint did it with the Evo even if they didn't have 4G in your area).
I'd personally like to keep my unlimited over get the 4G network.