Performance flagship spotted without disguise, showing minor design differences.

The facelifted Porsche Macan Turbo has been spied devoid of any camouflage, giving us a clear look at the upcoming performance hero ahead of an anticipated reveal before the end of the year.

Not much really distinguishes this vehicle from the standard facelifted Macan revealed in July, though there's a larger cutout spanning the width of the front bumper, along with the large squared-off tailpipe finishers sticking out of the rear.

It's still unclear what the extent of revisions to the powertrain will be, though it's rumoured the Macan Turbo will swap out the current 3.6-litre twin-turbocharged V6 for the new 2.9-litre unit used in the Panamera and Cayenne, along with the Audi RS4 and RS5.

Currently, the top-shelf Turbo makes 294kW and 550Nm in 'standard' trim, allowing the 1878kg SUV to dash from 0-100 in a claimed 4.8 seconds.

Other upgrades will include a comprehensive interior redesign, including the latest 10.9-inch Porsche Communication Management infotainment system with online services, along with the latest and greatest in driver assistance and active safety systems.

The facelifted Macan Turbo is believed to be scheduled for a production reveal before the end of 2018, ahead of a market launch next year.

Porsche's local arm has already priced the entry-level four-cylinder 'Macan' at $81,400 before on-road costs – you can read that story here.

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