Vard Marine

Since we know Vard is involved it is a good bet it will be based off one of their hulls. When you look at the Vard series of vessels that have already been designed and would only need minor alterations to meet the requirements of the DCP2019 and the requirements of the RNZN. I believe it will be done this way. Meaning it is going to be difficult for options... but the base is basically done. I would update the current designs they have proven themself in the southern ocean, and OPV's longer and wider, (basically bigger) and a polar class 5 hull. This gives room below for maybe some small labs for the scientists, larger flight deck and hanger. and still have room for the aft crane for off load equipment ashore.

From  their website and to be fair there is more to it, 

Vard Marine’s suite of proven designs for Offshore Patrol Vessels (OPVs) offer the operational and performance capabilities needed by navies, coast guards and other maritime security agencies around the world.

These OPVs, ranging in size from 25 to 125 metres, operate in tough coastal and offshore environments from the tropics to polar waters.

Traditionally, patrol vessels were designed to the same military standards as surface combatants. This approach resulted in higher shipyard costs amplified by high-cost equipment and systems requirements. As a result, OPVs were unnecessarily expensive and often unsuited to their intended function.

Vard Marine’s approach, however, is different. We design our offshore patrol vessels to high quality commercial standards, and fit with a weapons system as appropriate. We work to simplify the design, procurement and construction phases to produce a product you will be happy with.

https://vardmarine.com/vessels/

Their vessels are very adaptable to the clients requirements and needs. So my point is I don't believe we will get the Canadian version Harry De Wolf class nor do believe it will be based on the Svalbard, however is is more likely to a Vard 7 Ice hull length in the 100-105m range with hopefully at least a Polar Class 5 hull. But the rest will be designed to meet the RNZN and DCP2019 requirements.