For the iphone lovers or the iphone haters (otherwise known as android lovers)
Heres a few links to the live blogs.
Some of the big things so far, Its bigger, thinner, lighter. 4G, A6 chip....
Forward facing camera is now 720p
Facetime over cellular networks(long rumored.)
Bigger battery, presumably better battery life
New map system built from the ground up. Flyover feature. Turn by turn directions.
Passbook. Carry plane tickets, movie tickets, etc on your phone.
IOS6 things here and there.
Siri can do more now.