Sorry, we don't know yet. Currently Immigration is still accepting Expressions of Interest (EOIs) from New Zealanders wanting to sponsor their parents for Residence. The trouble is that they are not selecting any EOIs to invite parents to apply.
The best that can be said is that, according to a Government source, the new Minister of Immigration has asked to be briefed about the policy. If the category is finally reopened, it is unlikely to happen before the end of 2018.
In the meantime, as explained in
a blog post
this month from
at the firm, we have found some other ways to help parents stay in NZ. There is also the option of Parent Retirement Residence for those who can afford it, and multi-entry Parent/Grandparent Visitor Visas, which you can read about