November 5, 2006
Welcome to the world of 4-door coupes. After the highly successful CLS, it looks like everyone is trying to get on the bandwagon. BMW is rumored to introduce its X6, based on the 6-Series, and Audi is set to launch its A7 coupe. Now Porsche is getting in on the fun as well, with its upcoming Panamera. Engine choices will include a 3.5-liter V6 with approximately 300bhp, and a 4.5-liter V8 with 350bhp. For those wanting more, there will also be an available turbo version with around 560bhp.
One additional photo if you continue reading. 
These renderings look genuine enough to be the production.
[Source: The German Car Blog]