iOS 7, thoughts?

So it's a week since iOS 7 was released to the public. What are your thoughts so far? As for me it's very good and I like the new features, such as Control Centre. However, while it is very usable on my iPhone 4, it is sluggish, at least from a VoiceOver user's standpoint. But I know it's going to run just fine on my upcoming iPhone 4s. All comments welcome.