Apple has stopped signing iOS 8.1.1 beta 1 -- without releasing beta 2, indicating that an official release is imminent. Once iOS 8.1.1 is released, you will no longer be able to restore to iOS 8.1 and jailbreak your device.
The worldwide mobile phone market declined 1.5% year over year in the first quarter of 2012 (1Q12), as Samsung ousted longtime leader Nokia to become the world's top mobile phone vendor.