My membership year ended recently and I got an email this morning saying..
As you’ve earned more than 3,200 Status Points (including 1,920 from qualifying flights) in one year, you now qualify for Koru Black and will upgrade to this new tier when we officially launch the full Koru programme from April 2026.
So, I guess 3200 is the new magic number.
Not sure if my banked years are Black or Platinum yet. Or if my membership year will reset to April from next year.