It seems Apple has developed a strong security this time. iPad 2 is now available. Interestingly, GeoHot’s Limera1n exploit has been patched. Not only this, last updated Greenpois0n tool is also closed for it. And we are not considering Sn0wbreeze as it also uses the same exploit that has been patched now. So at the moment none of the previous tool is capable of jailbreaking the iOS 4.3.
So now we will have to wait for someone like Comex, who specializes in userland-based jailbreaks, to do their magic and bring yet another JailbreakMe like tool to jailbreak iOS 4.3 firmware on the iPad 2.