Soundwave on 14 March 2014
Now that we have confirmation of 3DS/Vita numbers (151k for 3DS, 24k for Vita), here's a look at how Nintendo's primary handheld has performed since around the time of the iPad launch and the boom of the smartphone gaming era (Angry Birds)
Feb 2010 (DS): 613k
Feb 2011 (DS): 456k
Feb 2012 (3DS): 262k
Feb 2013 (3DS): 183k
Feb 2014 (3DS): 151k
In 4 years ... that's an unbelievable drop off, especially factoring that the last 12 months have been one of Nintendo's best years for handheld game releases -- Fire Emblem, Luigi's Mansion 2, LEGO City, Mario & Luigi, Pokemon X/Y, Animal Crossing, Art Academy, Brain Training, Monster Hunter 3 Ultimate, Zelda: A Link Between Worlds, SMTIV, and Bravely Default.
