Apple has just released iOS 6 beta 4 (10A5376e) for iPhone, iPod touch, and iPad to developers. iOS 6 beta 4 is currently available to paid developers via Apple's developer portal, developer.apple.com and as an over-the-air (OTA) software update via Settings, General, Software Update on iPhone, iPod touch, and iPad.
iOS 6 was introduced at WWDC 2012 on Monday, June 11. Beta 2 was released on two weeks later on Monday, June 25. Beta 3 was released three week later on Monday, July 16. Now, Beta 4 has followed 3 weeks after that. While slightly longer between releases, iOS 6 is sticking to a more regular, Monday schedule than last year.
We previous looked at how many betas there might be for iOS 6, using past release schedules as checkpoints, and how iOS 6's flagship features compare to those of Android 4.1 Jelly Bean, Windows Phone 8, and Blackberry 10.
If reports of a September 12, 2012 Apple special event are accurate, that will likely be the date for an iOS 6 Gold Master (GM) seed for developers, with general public release following on or around September 19, shortly before the new iPhone 5 launch rumored for September 21.