Initial orders of the iPad mini -- pegged at around six million units for 2012 -- may be only half of what will be required, according to a report from NPD DisplaySearch analyst David Hsieh, who told CNet that Apple is now asking its iPad mini display partners to double the initial order, expecting more than 12 million units to be sold by the end of the year. For a product who's size class was strongly resisted by Apple for years, the nearly 8-inch iPad mini is very likely to outsell its larger, recently-updated big brother, the 9.7-inch fourth-gen iPad.