Link: ‘On Negative App Store Reviews During Betas of iOS and OS X’
Good editorial from Federico Viticci at MacStories regarding an unfortunate side effect of Apple's public beta program: people leaving negative reviews of apps that don't work properly with iOS and Mac OS betas.
If you're one of these people, please stop. Developers are not allowed to submit iOS 9 updates to their apps yet. Even if they wanted to take advantage of every new feature, Apple doesn't permit iOS 9 updates until about a week before the system is finalized.
If one of your apps doesn't work with iOS 9, let the developer know via email or Twitter. Test it with each new iOS beta. But for the love of god, don't ruin their App Store rating!