Apple's yearly developer conference should see iOS 8, OS X 10.10, and likely some hardware.
Apple Issues Refunds for "Premature" Purchases of GameStore App
We received this email from iTunes Support, claiming that the GameStore app was "made available for sale prematurely."
You recently purchase the GameStore app. The app was made available for sale prematurely. We apologize for the problem and have refunded the purchase amount back to your account. These funds will be applied to your original payment method within 5 business days.
iTunes Store Customer Support