With Porsche's four-door coupe nearing production and Aston Martin readying the Rapide, it's easy to forget the one that started it all has been on the market since 2004. The shape of the Mercedes-Benz CLS-Class is still one of most striking on the market, but DCX evidently reckons that by the time the fourth year roles around, it'll be time for a few cosmetic changes.

This disguised test mule was caught undergoing cold weather testing somewhere in Europe. We can see the from the photo that the updated CLS will get a new grille mimicking that of its big-coupe counterpart, the CL, plus a new set of taillights and a new rear bumper around back. It'd also be safe to assume some changes will be made to the interior, and some new rims should round out the package. The arguably least attractive element of the design, the strangely-shaped headlights, will evidently carry over unchanged, though.

The revised CLS-Class should be hitting the market sometime in 2008, ready to hold its own against the onslaught of future competitors in the four-door coupe niche market. Click the Read link to check out additional uncropped spy shots of the next MB CLS.

[Source: World Car Fans]