Only moments ago we told you that Apple seeded the iOS 6 beta 4 firmware to developers. Although we have not noticed any significant changes yet, the obvious wave of bug fixes and stability improvements move iOS 6 closer to a public release. Something interesting to note about the iOS 6 beta 4 firmware however, is its expiry date.
iH8Sn0w has recently tweeted that the iOS 6 beta 4 build 10A5376e firmware will expire on Sunday September 30th, 2012. If this date sounds familiar it is because it is the same day that the iOS 6 beta 3 firmware expired. And if you are wondering what an expiry timer means, essentially it will force anyone who is running a beta firmware past a certain date to update to the next beta firmware or the latest firmware version available at that time.
The significance of both beta firmwares having the same expiry date is it means Apple has to release the official iOS 6 firmware before September 30th. Now Apple could simply release another beta firmware with a later expiry date, but with both iOS 6 beta firmwares having the same expiry date I think it is a good indication that we will indeed be seeing the iOS 6 firmware and new Apple products released in September as rumoured.