It's almost expected now for major games to be subject to one or two delays. A lot of franchises are even plagued by years of limbo, with no release in sight. Five Night's At Freddy's isn't one of those franchises.
Not for the first time, franchise creator Scott Cawthon has surprised fans by stealth releasing his game weeks before it was supposed to come out. FNAF World was released last night, and this only a week after Cawthon projected a February 19th release.
The game is a departure for the series, seemingly dropping its horror roots to create a turn based RPG based on the characters of the IP. It's odd to see happen, but hey, lets wait for a few reviews to see how this works.