The McLaren 600LT has been spotted for the first time undergoing performance testing at the Nurburgring.

Our spy photographers have captured images of the forthcoming McLaren 600LT testing at the Nurburgring. The images come just weeks after McLaren teased the track-focused model, which will be revealed online on 28 June before making its public debut at the 2018 Goodwood Festival of Speed.

We expect the 600LT to supersede the 570S Track Pack atop McLaren’s mid-range Sports Series model-tree and a quick glance at the images of the camouflaged test car, all but confirms this. It’s clad in heavily sculpted bodywork that’s bespoke to this Sports Series model and is a direct reflection of the 600LT’s hardcore, track-biased remit.

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Upfront, a revised front apron features angular winglets at its extremities, which help create a wider stance in conjunction with the new, prominent side skirts. Look further down the flanks just aft of the rear wheels, and you’ll spot the unique aero-duct integrated into the rear bumper section, one of many elements comprising the car’s new aero-package.

The most notable of the 600LT’s changes over the 570S are the relocated exhaust outlets, which have moved up from the rear valance on to the rear deck, permitting McLaren to fit a larger rear diffuser in the process. There’s a fixed-rear wing, too, which along with all the new bodywork should deliver greater downforce. The above design details are similar to those seen on McLaren’s last Long Tail model, the 675LT, which will have been a major influence on the 600LT’s development and design.

With that in mind it’s no surprise that McLaren has confirmed the 600LT will be more powerful – expect around 447kW – and lighter (than the 570S) and also deliver optimized aerodynamics.

Otherwise, the British marque has remained tight-lipped on further specification and price details for the model which is expected to be produced only in limited numbers.