Our spy photographers have nabbed the Porsche Boxster almost completely camouflage free ahead of its expected debut next year.

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Earlier this week we ran photos of the updated Porsche Boxster, caught outside the company's headquarters in Zuffenhausen, Germany. That prototype had a shroud of plastic hiding the changes made to car's front fascia.

These latest photos show a vehicle that's completely disguise free. The only exception are a set of print outs pasted over the headlights, through which we can a quartet of LED driving lights.

The facelift brings a revised design for the front and rear bumpers, as well as the updated head- and tail-lights. It looks as though the car's side air intakes have been modified also.

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According to a British report published earlier this week, the new mainstream Boxster and Cayman ranges will be powered exclusively by a new suite of turbocharged four-cylinder boxer engines.

If the report is correct, the revised entry-level Boxster and Cayman models will ditch the current models' 195kW 2.7-litre flat-six in favour of a 2.0-litre turbo with around 178kW of power.

Next up, the Boxster S and Cayman S will lose their current 232kW 3.4-litre six-cylinder motor. Its place behind the passenger cell will be taken over by a 2.5-litre turbo generating around 224kW.

At the top of the pile, the Boxster GTS and Cayman GTS will ditch their 243kW 3.4-litre engine for a more powerful variant of the 2.5-litre turbo. It's rumoured that the new GTS will have around 275kW to its name.

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The new Boxster is expected to debut some time in 2016, with production of the updated vehicle likely to begin around mid-year.

Porsche is scheduled to introduce a facelifted 911 at this year's Frankfurt motor show. The 911 update will see non-GT models powered exclusively by turbocharged, but downsized, versions of the company's famous horizontally opposed six-cylinder motor.