Oh yes, this just got in! iOS 4.3.3 untethered jailbreak is still possible. The bug has not been patched in the latest iOS 4.3.3 software update. @comex just confirmed this!
Untethered jailbreak iOS 4.3.3 is not patched and is still possible in the latest firmware update. We would still recommend you to stay from updating your devices to iOS 4.3.3 just to be on the safe side. Wait for atleast 24 hours!