Apsattv:

 

DjShadow:

 

Going by the website, us One NZ users should see the increases starting on Wednesday 

 

 

Yes   as in the email they sent weeks ago
Your speeds will change automatically from 18 June. No extra setup. Just faster internetting on us.

 

I'm on one.nz and Tuesday morning and around 10:30am my internet went down. Stayed down for 15 mins or so and when it came back up I ran a speed test:

So looks like one.nz have done what was necessary at their end to push this change out.