The StageONE power meter will be on display for the first time at Interbike at booth 23151 in the show’s main hall on Wednesday, 19 September. StageONE will be available for retail sale January 2013.
Notice that it says January 2013, and doesn't mention a date of January 1.
A company rep just told me over the phone that there will be a press review release ca. Jan 15-20, with retail shipping (the first pre-orders) shipping shortly thereafter, still within January. New orders might not be filled until February.
Will this come to pass? If you believe the rep, the only thing which would hold it up is if some problem is found in the press reviews or teams which have (already) been testing them.
Call the company (telephone numbers are on their website) and ask them/suggest about the 52-36 if you want.