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I suspect Sprint will get the CDMA iPhone5 this summer, at the same time as Verizon gets it, and ATT will be first with the GSM iPhone5. then June 2012 all 3 carriers will get the "4g" iPhone6... but who knows...

My wager: The big deal for iPhone5 will be improved notifications and on all 3, (or maybe even 4 US) carriers.

EDIT: Damn, Fernandez and I are thinking exactly the same
 
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