For those of you who are jailbreakers and need to be outside of Apple's control, there is a new tool just released today by the famous Jailbreak teams (chronic dev team, iphone team, and pod2g) just released today Absinthe 2.0, this tool covers iOS 5.1.1 and all devices pertaining to it even the new iPad 3 Retina Display, (only exception is AppleTV3 is not hackable yet)
Go here to download for Mac, PC, and Linux, if you are tethered jailbroken (A4 and lower devices) use cydia to untether with rocky corona