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That was going to be my question too. I'm going to assume that orders will go live at 12:01 and the date rolls over in each time zone (they've done that in the past I believe), since that helps to reduce load on the servers and spread out the rush, but I'm not certain.

MR usually has a confirmed pre-order launch time by this stage, so I assume they haven't heard anything or everyone is assuming it's midnight.
 
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