I'm all signed up for iOS 9 public beta and I'm going to try it on my iPad. If it works out I may do it on my iPhone as well. My real concern is this. How hard will it be to go from the public beta of iOS 9 to the general release (the final public version) of iOS 9 when it is finally released to the public? I've read all of their documentation, but I want some actual user input on those that have done it. Do I have to do anything funky? Will I lose any data? Is there a proper upgrade path? How difficult will it be to go from public beta iOS 9 to the final version of iOS 9?