Those looking for more challenges and coins will be very pleased.
http://www.nintendoworldreport.com/news/32237
Two New Super Mario Bros. 2 DLC level packs will be available today in Japan, after their Nintendo Direct, for 200 yen each.
The first set of levels is known as the Gold Mushroom pack and will present the player with many opportunities to collect valuable Gold Mushrooms. The second bunch of levels is a sequel to the Challenge pack that was available in the first set of DLC.