Smart money is on a configuration "similar" to AC's 787-9
https://www.seatguru.com/airlines/Ai...ng_787-900.php
BP between Door 1 and 2, PE just after Door 2.
Of course it'll be 1-1-1 Herringbone seats on NZ instead of the 1-2-1 Reverse Herringbone of that on AC.