With this new iOS version Apple has just fixed the famous Location Gate.
Here's the official changelog:
• Reduces the size of the cache;
• No longer backs the cache up to iTunes;
• Deletes the cache entirely when Location Services is turned off.
So if you want to maintain the jailbreak on your device do not upgrade to iOS 4.3.3 .
A few hours after the iOS' release, comex with a tweet announces that apple hasn't fix i0n1c's exploit.
So in 1-2 weeks we'll have a jailbreak tool for this iOS.