4.0.2 JB (*sigh* please ignore, irrelevent to most new devices)

[mlts22]

http://www.redmondpie.com/jailbreak-ios-4.0.2-with-redsn0w-how-to-guide/

Just for reference, pulled from Digg just now.

Edited -- jumped the gun on this, not relevant to newer devices.

 

[Intell]

This has been posted before.

I will note for all the noobs: It only works on the iPhone 3G or iPod Touch 2G at this time.

 

[maturola]

Yes, was posted yesterday - Only for 3G and older - for now

https://forums.macrumors.com/threads/991491/