Eh, I might not upgrade. For one, the main feature Apple showcased was Facetime. The problem with that is only a certain amount of people will the i4 will be able to use that feature. The front camera will eventually be utilized by other apps such as Skype the problem however still remains. How many of my friends are getting the i4 ? Not enough for me to count on one hand.
Second reason is the 32GB cap. I only have 400mb +/- left. I have tons of music , photos, apps and MOVIES. I love movies. I was excited for the higher resolution because that meant HD movies galore ! Sad part is, as my music and photo collection grows, i have to keep switching out movies. I can choose to only carry SOME photos but I hate having to choose between so many.
I think I'll eventually convince my self to bite the bullet but the fact that there might be the with 64GB and 128GB of memory urks me. Guess I'd have to get use to the sell and buy strategy.