It took Apple almost two weeks to release iOS 4.3.4 and close the PDF exploit that allowed the jailbreakme.com jailbreak. The jailbreakers have shown much more efficiency than Apple and just hours after the 4.3.4 release, have already broken it on all devices except the iPad 2.
Indeed, iOS 4.3.4 can now be jailbroken on almost any device using an updated version of Redsn0w (available on the Dev-Team’s blog). The exploits the Dev-Team discovered a while ago should always allow this on current hardware. Unfortunately, all this gets you is a tethered jailbreak. Therefore, you’ll need a computer to boot your device every time if you want to have access to all the features.
Also, since iOS 4.3.4′s only reason to be is to prevent the jailbreak loophole, you’re much better off staying on 4.3.3 for now. For those concerned by the security risk, note that there is a Cydia tweak that takes care of it. Either way, you can now find the iOS 4.3.4 jailbreak right on the Dev-Team blog, free of charge.
If you get to try it, make sure to tell us how it went in the comments!