I am an Apple Developer, so I was able to download iOS 7 onto my iPhone 5.
Here I will post my reviews of the various betas and show you guys screenshots, as well as answer any questions you may have.
First Impressions: Everything is new and different. Very bright, yet elegant. The lock screen is beautiful. Multitasking is incredibly smooth and easy to use, simply slide it up to clear it. Everything is VERY smooth for being a beta 1.
Screenshots coming soon.