I think Tim will watch himself on that keynote video and learn how to make his delivery a bit more upbeat and concise.
As anyone who has ever done one of these can tell you, it's a lot harder to get your pace & timing right than you might think. Usually takes some practice before you don't come off like you're on lures or a crackhead. It looked & sounded like Tim was really focusing on his pacing....
But I really think they missed an opportunity to sex this whole thing up. I understand the logic behind a new model and an upgrade model and all that.
But you have a new CEO to introduce, and you get one shot at making a first impression. They already did the hard part, & reengineered the guts of the device & gave it a new OS. All it would have taken to make this a huge event is a different enclosure design, calling it "iPhone 5" or "iPhone V", trim the statistics fat off the presentation, and speed up the video of Tim 5 or 6%, and it'd be evident that after being up in the air after Jobs, Apple has hit the ground running.