According to translations from Capcom's official Japanese website for the game, Ibuki has been quietly delayed till next month.
Company waited until the last day of the month to announce this month's character wouldn't arrive. New plan is to arrive around the same day as the game's Story mode.
http://www.capcom.co.jp/game/content...aikyoblog/1233
http://www.eventhubs.com/news/2016/m...ory-expansion/