Disappointing for me to say the least.
Either it needs more work, which can go either way, or they're jockeying for a "more open" release window.
I hope it's not the latter because March-May is going to fill up real quick with dates. We don't have dates for God of War(rumored Q1), Spiderman(first half of 2018), Detroit(rumored February), RDR2, Project Octopath Traveler, State of Decay 2, and Far Cry is pretty darn close to that date.
Probably not too much overlap between NNK2 and those games, but for me I would be under duress if any game releases near NNK2 that I want to play.
I just want the game. :(