This new Commodore will be the first to be imported, as Holden's local manufacturing facilities are set to close in the second half of 2017. It will also be the first Commodore to feature front-wheel drive, although all-wheel drive is likely to be used for performance variants.
The prototype spotted here doesn't reveal any important new details about the car's exterior, with the details of the fastback-style body still well hidden below copious quantities of camouflage and false body panels.
Our photographers, though, have given us our first look at the Insignia/Commodore's interior.
Despite the massive alloy wheels and low profile rubber, the prototype snapped here seems to be a lower-spec model, as it features analogue gauges with a monochrome multi-function trip computer screen in between.
Reports indicate that the exterior styling of the new Insignia/Commodore will be inspired by the 2013 Opel Monza concept. The second-generation Insignia will grow in almost every dimension, and is expected to match or better the VF Commodore's 4964mm length.
Despite the increased dimensions, the use of high strength steel and other lightweight materials will see the Insignia's weight drop by around 100 kilograms.
Under the bonnet, mainstream Insignia models will be powered by a selection of turbocharged petrol and diesel four-cylinder engines. Range-topping variants are said to feature a 300kW turbocharged petrol V6 and an all-wheel drive system.
In addition to the fastback-style model seen here and in earlier spy photos, the Insignia will also be offered in Europe as a wagon.