Repeat of the late-2012 iMac launch, indeed. Joining Apple’s international online stores, Apple’s United States, Canada, and Mexico online stores are now quoting a March shipment timeframe for the “late 2013″ Mac Pro. The Mac Pro launched in December to a February shipment quote, and as the month of January nears its end, the new March shipment timeframe indicates little to no improvement in a supply to demand balance for the $3000+ workstation.