Looks like about 60 services out of 90 have been cancelled due to unspecified 'security concerns'. https://www.tvnz.co.nz/one-news/new-zealand/aucklanders-threaten-organise-rogue-anzac-day-services-in-face-police-cancellations
But since the shooting, they have enacted strengthened gun control, broadcast the Muslim call to prayer and cancelled Christian prayer, as was the custom, in their parliament.