The 5th Edition of the WCF Rules of Golf Croquet were approved by the WCF Council on 8 July 2018. Links to the text of the new Rules and two explanatory documents may be found here
WCF GC Rules 5th Edition - Official Rulings
The new Rules are immediately effective in relation to WCF Events and so will apply to the forthcoming Over-50 Golf Croquet World Championship (Egypt, October 2018), Women's Golf Croquet World Championship (New Zealand, February 2019), Under-21 Golf Croquet World Championship and Golf Croquet World Championship (July/August 2019).
WCF Members are responsible for determining when the new Rules come into effect in relation to domestic competition.