Along with the announcement of miitimo and mynintendo coming out on March 31 which is this thursday, they announce a new expanded Eshop for the wii u and 3ds in a similar setup to the super mario maker website where its expanded and cataloged. you can use this to purchase with money (and presumibly your gold, silver, and platinum points) from a BIGGER game catalog using your nintendo account + your computer/smartphone and they will send your purchases to your system it was bought for.
http://gonintendo.com/stories/254939-miitomo-launches-in-the-u-s-on-march-31
http://gonintendo.com/stories/254939-miitomo-launches-in-the-u-s-on-march-31