As edited by me from the audi A4.

2007 Audi A5

1 - What is it?
Audi's first four seater coupe since the Audi errr coupe.
The all new A5 has a longer wheelbase than most traditional coupes in order to make the rear seat more spacious. It will also be later on available in S and RS versions.

2 - What's under the hood?

Sitting on audi's brand new MLP chassis, which promises to drastically increase dynamics. This next generation chassis allows for audi to use it across nearly their entire range, and can be set-up to understeer, have neutral handling, or oversteer. With this chassis audi can introduce new models more quickly, and cheaper.

Motivation will come via turbocharged 2.0-liter four cul. , 3.2-liter V-6, 3.6-liter V-6, 4.2-liter V-8 and a 5.2 V10 boasting about 480hp.
A redesigned transaxle (incorporating a more compact clutch and differential) allows the engine to sit farther back than it does in Audi models of the past, trimming the front overhang and allowing for better weight distribution.

3 - Any other extra?
Rear biased all-wheel drive, a 7 speed dual-clutch DSG transmission, and Delphi's MagneRide magnetic dampers will be on the options list.

4 - How much?
Base prices will start between that of the 3 series coupe and Mercedes CLK.