Square Enix has admitted this oversight, and released a statement to Joystiq explaining the lack of units. They felt the unique style of TWEWY was released in just the right place at just the right time. They were right -- but that still doesn't result in John Q DS getting the game! Square has confirmed that the next round of units will be arriving mid-June, so you'll have to twiddle your thumbs for a little longer. Relax - it's not the end of the world.
Gallery: The World Ends With You