Apple seeded iOS 5 Beta 7 to developers few days back and now iH8sn0w has tweeted that iOS 5 Beta 7 expires on October 20, 2011.
iOS 5 BETA 7 expires on Thursday October 20, 2011 @ 8:00:01 PM [Eastern Standard Time] #TheMoreYouKnow
iOS 5 Beta versions are only for the iOS developers as you require a iOS developer’s account to download it.You can get iOS developer account by signing up here and paying a subscription of $99 yearly.
It should be noted that Apple is getting strict on those who are downloading iOS 5 Beta versions without a developer account.
If you are among those who are running beta version of iOS 5 in their idevice it is advisable to downgrade to a lower version otherwise if you are still running iOS 5 beta firmware by the expiry date then your idevice will be locked till Apple releases iOS 5 to public.
There are expectations that iOS 5 will be released along with iPhone 5 by October.
If you want to downgrade your idevice then you can go through this post.