Two Shantae games in one day is not out of the realm of possibility.
Shantae and the Pirate's Curse will soon be appearing in retail stores.
Rising Star Games has picked up the 2014 eShop title for physical publication on September 27 in North America and 30 September for Europe. The game will release for US$29.99 / C$39.99 / €29.99 / £29.99, and the announcement includes a mention of brand new content for the physical release.
If dates hold, there will be Shantae releases for both 3DS and Wii U on the 27th as Shantae: Half-Genie Hero is currently showing the date for its Wii U physical release distributed by XSEED.