Last month the WCF administered a vote with its members on whether to accept the proposed GC Rule changes which ultimately passed.
The 5th Edition of the WCF Golf Croquet Rules can be found here. Supporting documents can be found on the WCF website, here.
These rules will come into effect from 1 September 2018 in New Zealand with the exception of the New Zealand Secondary Schools GC Championship Final which will be played under the old rules.