"Hayazashi Shogi Sandan" was released by Nintendo for WiiWare in Japan

Nintendo itself released new WiiWare software called "Hayazashi Shogi Sandan" which is shogi specific software based on TACOS as shogi engine on July 23. It supports Nintendo Wi-Fi connection as well. For more information, please read the articles linked below;

WiiWare: Shogi coming | WiiNintendo
IGN: Nintendo Brings Shogi to WiiWare
Hayazashi Shogi Sandan (Official Page in Japanese)