The pictures leaked on social media reveal a livery dominated by the company's Porsche Intelligent Performance slogan.
The German marque confirmed last month that the car will powered by a two litre turbo charged V4 engine, alongside advanced hybrid technologies.
Former Red Bull Racing F1 star Webber will lead the #20 919 Hybrid entry alongside 24-year-old Kiwi Brendon Hartley and experienced German Timo Bernhard.
Porsche's #14 919 Hybrid will be driven by 30-year-old Swiss ace Neel Jani, 33-year-old German Marc Lieb, who raced in the V8 Supercars Pirtek Enduro Cup last year, and 36-year-old Frenchman Romain Dumas.
Webber and the Porsche 919 Hybrid will make their racing debut when the WEC season kicks off at Silverstone on April 20.