I’m feeling similar things at the moment. After the keynote, I was ready to sit down and code. However, I found I couldn’t because the new UI was such a departure, I was effectively dumbstruck. Even after reading the documentation, I can’t firmly pinpoint the characteristics that makeup a great iOS 7 application. My confusion was compounded by the fact that the current developer seed of iOS 7 is full of weird UI inconsistencies. It is unclear if these areas are simply unfinished or whether they are true representations of how Apple wants apps to look and behave going forward.
Hours after the keynote, I used the phrase “blindsided” to describe my reaction. Today, that continues to be a good description of how I feel. Right now, I’m stymied.