Apple typically releases new builds of its mobile operating system about two weeks apart, until the final gold master version is ready just before the ultimate launch to the public.
Apple released iOS 7 beta 2 on June 24 and then followed that launch on July 8 with iOS 7 beta 3 – almost exactly two weeks later. That’s why sites such as AppAdvice are currently expecting a similar launch window for iOS 7 beta 4. July 22 would be exactly two weeks from the publication of iOS 7 beta 3. It’s possible that the launch could come a day before or a day after, but at least we have a window to look forward to.
We’re not sure what to expect from iOS 7 beta 4. Apple added iPad support in beta 2 and then added a few other surprises in beta 3. Sometimes Apple will add new features, like tweaks to calendar, email or SMS, and sometimes it adds behind-the-scenes features that mostly apply for developers. We’ll let you know as soon as it’s available. Stay tuned.