The first in a series of announcements about the current tender for national air ambulance services - including Rotorua's BayTrust Rescue Helicopter - is expected to be in late September.
The Ministry of Health and ACC's tender process, currently under way, is the first step towards a 10-year modernisation programme for air ambulances.
The tender process has now moved into formal negotiations with three preferred tenderers across three regions; northern, central and southern.
The negotiations remain confidential until they are concluded and the results of the tender announced, to ensure the process remains fair to all the parties involved and to fit with the Government's rules of a formal procurement process.
The negotiations are aimed at ensuring the new services will deliver a nationwide service for all New Zealanders and be more integrated with the country's road ambulance and hospital services.