Nintendo seems like they are smack dab in the middle of another major Zelda push. The very interesting Hyrule Warriors is set to release this year and more of the franchises titles are getting announced for virtual console services. The most recent one being Minish Cap.
You may remember if you bought the 3DS at full price before their major price drop that this was offered as a download to ambassadors via the ambassador program. However, that obviously wasn’t available to everybody and finally, years after the ambassador release, they are giving this an official release.
No price or release date has been set, but I would expect it soon. It should also be noted that the typical price for Wii U GBA virtual console downloads is $7.99.