The March data for New Zealand is now out (reminder: the .nz reservations ran out at 1pm NZ time on 30 March)
https://dnc.org.nz/node/1482
For the first time, monthly .nz increases outpaced .co.nz increases. Over 9,500 .nz were registered compared to 2,000 in January and 2,600 in February. That increase represents about 30-40% of the reserved .nz names (I don't have an exact figure, but I believe it was of the order of 15,000 reserved names).
In other words, between 3 and 4 out of every remaining 10 .nz that had been actively reserved (it was opt in not opt out) were taken up by the deadline. (I have no data on how many eligible .nz were taken up before March - it's impossible to separate those from the overall .nz registrations - so my figure is only for the reserved names that were still outstanding towards the end of the reservation period)
Overall, .nz now stands at 115,000 to 490,000 .co.nz so just .nz is 23% the size of .co.nz. And there's no more "help" on the horizon for .nz since it's a pure free-for-all just like .co.nz now.
And that 23% was achieved with much, much, much more communication to registrants than Nominet has bothered with. I lost count but I'm sure it must have been at least half a dozen individual emails for every eligible name (we've got 400+ domains so that was a crazy amount)
All of which makes grim reading for .uk.