Yes, looks like all Business rewards trans-Tasman are impacted - Brisbane used to be wide-open for rewards up the front of the plane and they have all gone too.
Interestingly, business class inventory on NZ for non-stop flights to Honolulu and Japan is still available. Nothing of course for AKL-US mainland flights..
My comments based on looking for award flights at united.com
I have seen exactly the same on Expertflyer - there is no *I* class inventory on trans-Tasman flights at all. United.com is correct in this case.
I wonder if this is being done on purpose or by accident. Does anybody have any insight into this? Maybe I will give Air NZ a call tomorrow morning.