Green Pois0n just released “Absinthe A5” which provides an unthread jailbreak on A5 devices! This means the iPhone 4s and iPad 2! Download inside.
Update 3: Abstinthe has been updated to version 0.3 to fix some errors and is now available for Windows and Linux!
GreenPoi0son.com is currently experiencing extremely high traffic and is unreachable but we have a mirror!
iPhone 4S running iOS 5.0 (9A334) and 5.0.1 (9A405 and 9A406) and all models of the iPad 2 running iOS 5.0.1 (9A405) can be jailbroken with this.