Apple scheduled to release the fifth beta version of iOS 8 in early August, according to 9to5Mac. iOS 5 beta 8 will be released on Monday, August 4.
The iOS 8 firmware is supposedly already being tested by Apple engineers for some time now and if all goes according to plan, the Golden Master version, which is usually similar to the final release will be made available earlier than expected.
iOS Update 8, which is now in development, already has appeared in four beta versions for the Apple devices. The first beta version was released on June 2, the second on June 17, the third was on July 7. The latest at the moment is a test version iOS 4 beta 8, was published a couple days ago.
The final release of the upcoming apple mobile firmware will be simultaneously released with the iPhone 6 in mid-September for the iPhone, iPad and iPod touch