The first HD players were released in April, 2006. Blu-ray players followed in June 2006. The first NZ HD-DVD title is Peter Jackson's 'King Kong', which showed up on HD, 14 November 2006. Again, there are those who will no doubt say that 'King Kong' is not a New Zealand title, although that would be quite a stretch, but if the criterion is that it has to be mostly New Zealand, with little outside money or input, perhaps 'The World's Fastest Indian' would do, released 13 Feb. 2007. There are only three films that can be found on HD DVD: 'The Frighteners', 'King Kong' and 'The World's Fastest Indian'. The last known HD DVD release worldwide was on December 15, 2008. As of 24 September 2018, I have found 77 NZ feature titles on Blu-ray (or soon will be); as of this date there is only two 4K releases - 'King Kong' and, soon to be, 'Mortal Engines'.
The Blu-ray world is divided into three regions: Region A includes most of North, Central and South American, Southeast Asian countries plus Taiwan, Hong Kong, Japan and Korea. Region B includes most of European, African and southwest Asian countries plus Australia and New Zealand. Region C contains the remaining central and south Asian countries, as well as China and Russia. Unlike DVDs, many Blu-ray discs are ALL REGION, but some are region specific. Blu-ray details, including pricing, will be found within the information at the linked title pages. Region indications with "?" are those that are unconfirmed.