Game Informer has received additional information about the quiet delay of Mighty No. 9, with further substantiation that it will miss its September 15 release. The game does not have a new release date, but the most recent information reaffirms that retailer listings of 2016 are accurate.
Source: http://www.gameinformer.com/b/news/archive/2015/07/31/mighty-no.-9-will-not-release-in-2015.aspx
Source: http://www.gameinformer.com/b/news/archive/2015/07/31/mighty-no.-9-will-not-release-in-2015.aspx