Nintendo of America recently sent word to folks who have been inquiring about instant holiday sellout Dance Dance Revolution Mario Mix that the title is slated to once again be carried at retailers within the next few months.
In addition, Nintendo is offering to those who have been inquiring of the game's status from their customer service department (like yours truly) an opportunity to pre-order the game directly from NOA, for shipment in late February/early March. Quantities are said to be very limited — I was able to get my order in tonight; but if you got the mail, you may want to get yours in soon.