Sources close to Gematsu have told the site to expect Final Fantasy to be released on September 30.
The information provided to the site was “corroborated by three independent sources” which the site said are reliable and would have inside knowledge on the matter.
Square Enix said previously it plans to provide more information on the game as well as reveal the release date during the Uncovered: Final Fantasy 15 event in Los Angeles on March 30.
Gematsu notes to take all of this as rumor for the time being due to various internal factors within the studio. This would include such things as production and development delays, etc.
Final Fantasy 15 was announced during E3 2013 and is slated for release on PlayStation 4 and Xbox One.