verizon iphone 4 4.3 and jailbreak

I have a iphone 4 from verizon. currently on 4.2.8 till verizon decides to make 4.3 available....is there a way to install a 4.3 iOS and then jailbreak it etc? I have a mac and access to the iOS sdk...is there any tips on this or how to proceed?
thanks
 
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