They were advertising an extra NCL-CFU on a Thursday evening for 2018, this appears to have disappeared from their website now, you can't book it.
They're also offering ECONOMY PLUS on their A321s next year - the seating arrangement seems to be the same as existing all-econmy (38 rows) but it's only the first two rows of the AC that will have it.
Anyone shed any light on this?
Seating:
https://ibb.co/mGREEQ