Yes, it is just a sketch, but picture of the proposed Panamera 928 Coupe appears on the Porsche consulting webside.

The flood of new Porsches will continue for at least the next several years, it seems.

Porsche began re-inventing its entire range in 2009 with the introduction of the Panamera, setting new standards for sheer ugliness, followed by the face-lifted Cayenne, the new 911 and more recently, the remarkably pretty little Boxster - which proves, if nothing else, that Porsche does small cars better than it does big ones.

Next, according to Automobile magazine, will be a new Cayman later in 2012 (essentially the new Boxster with a roof, so no surprise there) with the same 195kW 2.7 and 232kW 3.4-litre flat sixes, to be followed late in 2013 by a revised Panamera (the more revised the better, we say) in standard, convertible, long-wheelbase and 'shooting brake' format.

Then there's the 918 Spyder, also due in 2013 and setting new standards for both prettiness and price. Porsche is also working on a crossover model - to be based on the Audi Q5 - and there is still a chance that the Pajun - the already-notorious mini-Panamera - could be green-lighted for 2107, alongside a completely new Cayenne and Cayenne coupé.