If you download the correct package for your phone, then do the update through iTunes, you can run it now without being in the developer program! There are guides online, but it's quite simple. I couldn't wait to try it. It's pretty great so far, iMessage doesn't seem to be working perfectly, but overall it's working pretty well. The now control panel that comes up from the bottom is super handy! Also the navigation between open apps is phenominal. iTunes Radio seems pretty decent too. I love it! If you have any questions about it, let me know!