People who are still looking to obtain these great posters will be somewhat let down. It has been confirmed that the posters are out of stock, people who ordered these posters late will have got a message saying that its on backorder. Don't let this get you down though, you will recieve the posters next month or before the month is over.
*UPDATE BY KLINK*
For those of you who have ordered these posters earlier this January, Nintendo has informed that your poster will arrive around week 3 of February. I myself received an email from Nintendo stating this.
Here is the back order image: