A Nintendo of America representative has confirmed that the immensely popular Pink and White Nintendo 3DS XL console was limited edition, and that the company has no plans at this precise moment in time to issue a re-release of the console. The Pink Nintendo 3DS XL is apparently completely sold out in North America, so eBay would be your best bet if you want one.
Thank you for taking the time to write to us about the Pink Nintendo 3DS XL. I can confirm that this color was a limited edition, and at this time there have been no announcements regarding its re-release or the release of additional colors. I certainly understand your thoughts on this matter and want you to know how much we appreciate you sending them in.
Update: The Pink Nintendo 3DS is still available to purchase at GameStop. Thanks, Andres