A day before we shared a video with you about iOS4.3 was Jailbroken Untethered named Alpha on iPad. When the video was showed so soon after @Veeence Tweeted that he will be holding the Jailbreak back and will wait till iOS4.3.1
With Apple already baking 4.3.1 the first one releasing an iOS 4.3 jailbreak will pretty much burn the exploit 😛
The reason he explained was
Well Apple should release 4.3.1 very soon, because tomorrow everybody knows that @0xcharlie popped an iPhone 4 at #pwn2own through Safari.
The PWN20wn contest is going and in that iPhone4 and Blackberry were hacked by the hackers via vulnerability which found in Mobile Safari running iOS 4.2.1. Although the vulnerability is also exist on iOS 4.3, but all iOS devices running iOS 4.3 are safe until hackers find a way to bypass the ASLR (Address Space Layout Randomization) which has been implemented by Apple starting form iOS 4.3.
So it is expected that Apple will release and Update to iOS4.3 to iOS4.3.1 and the other reason is that some people faced PhotoSync issues via iTunes on iPad.
You all have to stay away from the Updates till near future until no confirmation is giving to update.