Nintendo CEO says current FY financial guidance assumes 2 million units of Switch to be shipped this fiscal year ending in March — Takashi Mochizuki (@mochi_wsj) October 26, 2016

Although we don't have a firm March release date yet, the bulk of that 2 million figure will likely be made up of pre-order sales. For comparison's sake, Sony had 1 million pre-orders for the PS4 and shipped another 1 million units at launch in the US alone. The original Wii was likewise a hot seller off the bat and even the Wii U moved over two million units in the US and Japan during its first six weeks in late 2012 -- although Nintendo eventually fell way short of its plan to sell 100 million.