I think its here

[Taylor263621]

Check out this article:


Download Greenpois0n RC5 Untethered Jailbreak iOS 4.2.1 iPhone 4, iPad, iPod Touch

 

[nooris]

Nope this is not the final version. This is an RC (Release Candidate), which means its in the final stages of beta. There could be a couple of more RC's before the final version is finally released. Sadly still not here

 

[Taylor263621]

Whyyyyyyyyyyyy. I hate this tethered crappp....ok answer me this how many RC versions come out before the final release??? I have a funny feeling tha the final release will be any day now!!!!! hopefully

 

[nooris]

There is not set number of RC's, however they don't typically exceed 7 (but they can).

 

[iPad-Sweden]

News from this site often doesen't lead anywhere, doesent matter what u search on ex Google, this site pops up on every search.

And when It's official released U will surely find a post In here about It's arrival verry short after It's release.

Or keep an eye on http://www.iclarified.com that have verry up2date new, the news sites are many and iClarified Is just one of them.

 

[Digikid]

iLounge is a good site as well.