Apple's often-rumored tablet device has been narrowed down to a specific production timeframe and could land a deadly blow against Amazon's Kindle reader through a revenue deal, according to an unusually detailed research note from Oppenheimer analyst Yair Reiner. Investigations into Apple's supply network claim the widely reported 10-inch, multi-touch device will be put into mass production in February with a likely launch target of March or April. As many as 1 million will be made every month, according to the sources.