According to a tweet from the official Hyrule Warriors Twitter account, the game has officially completed development.
The game, which is being developed by Koei Tecmo, releases in Japan on August 14th, so it makes sense that its development is coming to a close. All that’s left now is finalizing the game and getting it ready for distribution, in addition to localizing the game for its international releases.
What do you guys think? Are you excited for Hyrule Warriors?
— 「ゼルダ無双」公式 (@zelda_musou) July 26, 2014