basically the reason for "Knock, Knock" not dropping back then is that they are trynna to build up more promo. and anticipation around the album, they wanna drop it at the right time.
but in meantime they do have the "Ghetto Gumbo" Soundtrack droppin like next month i believe, as well as Lee Major's "Scrape Thirsty Mixtape", & Lee's "Scraper Muzic" album droppin in June.