This was the expectation: either Nxt or a token created with the MonetarySystem but it's still unconfirmed, the news of Nautiluscoin has been a total surprise for Nxt community. Its relation with Nxt, if any, is still a mistery. The guy behind this project has promised a lot more news but for now there are more questions than answers!
I'll admit it comes as a surprise to me, I was led to believe BK had abandoned Naut and was instead propping up NXT now, but to me he finally did good on his investors in finding SOME use case for the coin unlike alot of devs around here who cut and run when things don't go their way.