Perhaps they will join the others?
http://www.nintendoworldreport.com/news/37026/australian-ratings-board-outs-two-gba-virtual-console-titles
On March 27, the Australian Classification Board classified ratings for two Game Boy Advance games.
F-Zero: GP Legend received a "G" for the general audience rating, while Castlevania: Aria of Sorrow was given an "M" for mature. The listings also classify the games to be multi platform, though no light has been shed as to if these will make it to the Wii U eShop.
The other eight games announced to release throughout April on the eShop still have a certification date of around a decade ago and list them for the Game Boy Advance rather than multi-platform, so it looks like this unclear action could be anyone's guess.