I'm happy to an extent.
Everyone is jumping up and down about turn-by-turn GPS. But with the new subscription stuff and charging for DLC in the app store how long do you think it will take before people see that most companies will probably want to charge you a montly fee for their GPS software (like AT&T, Verizon, and Sprint already do for all their other phones; ~$9.99/month). Google maps works fine for me, and you can be sure any GPS software that has a subscription fee will not be on my iPhone and I'm sure all the people who are freaking out right now will be leaving their 1 star reviews complaining that they have to pay.
I'm also affraid of being nickle and dimed at every turn now in the app store, I will be very upset if stuff starts costing $1 just to see something, use a new item in a game, or get an update. I may be ditching a lot of apps and become even more hesitant to pay for apps if this takes shape. The model they showed off looks even worse than some of the DLC Microsoft tries to charge for on Xbox LIVE; and I won't be any part of it.
TBH a lot of the features they are adding I will never use. Push notifications will be nice but I was hoping for better notification system overall, better app management, and stuff like that. I would say I am most happy for landscape keyboard in all the "key" apps now, that's how little I care for most of the other features.