The Chronic Dev-Team has released an update to the Rocky Racoon Untether package that supports the new iPad 2,4.

This package will allow your 5.1.1 device to reboot without requiring an external tool such as redsn0w.

As there are now two versions of iOS both called "5.1.1" for iPhone 4 GSM, 1.0-2 was released to support both.

Apple released a new iPad 2 WiFi, a unique piece of hardware that was difficult to find, now support in 1.0-3

via iclarified