These Porsche 911 Turbo facelift spy photos confirm even further the coming of Porsche's halo car. More than mere cosmetics, Turbo promises notable increases in power and performance.

Porsche, ever conservative in their approach to 911 design, have already revealed the facelifted versions of its current 911. Missing still has been the highly respected Turbo, but we can already confirm its existence from these latest spy pictures taken on the Nurburgring Nordschleife. The 911 Turbo is thought to be headed for a North American International Auto Show 2009 (Detroit) unveiling, which will confirm a number of features.

These include redesigned front and rear bumpers, a new headlight layout and new taillights. The new uprated turbo engine, probably displacing 3.8-litres, is said to make an extra 20hp (15kW) or so in order to set things completely straight between itself and its newest nemesis, the Nissan GT-R. Brakes are not expected to be changed because they are already in a very high class. Interior will get some form of enhancement as well to match the new look.

Gallery: Porsche 911 Turbo Facelift Spy Photos on the Ring