Last night Apple released iOS 4.3.4 to block the exploit used by comex to make the jailbreak solution on jailbreakme.com 3.0. In addition to the comex exploit, the exploit used by i0n1c to jailbreak iOS 4.3.1 - 4.3.3 would have been blocked, so we may no longer have the option to jailbreak untethered, but only tethered on iOS 4.3.4. The tethered jailbreak requires restoring the jailbreak after each restart of the terminal, so you must have a computer near you if you reset the device, otherwise it will not start again.
As I predicted 10 days ago, Apple released iOS v4.3.4 today. This does nothing except patch the jailbreakme.com jailbreak from comex and, in the process, patch i0nic's exploit making it so we cannot jailbreak 4.3.4 untethered.
Probably many people expected this, the information was published by BigBoss on blog or but also in a warning available in Cydia, so it is not known how true it is and i0n1c has not announced anything on his Twitter account. redsn0w does not work for now with iOS 4.3.4 but PwnageTool works, but it needs to be modified with certain bundles that I currently do not recommend. In conclusion, goodbye untethered jailbreak for iOS 4.
UPDATED: i0n1c confirms that his exploit has been blocked.
