As it says, there will be carbon editions of both the RS4 avant and RS5. Both cars will feature the 2.9 v6 engine with slightly increased power output from 444bhp to 447bhp and 600NM of torque. This will propel the RS5 to 0-60 in 3.9 seconds and the RS4 0-60 in 4.1 seconds.
Also both cars will feature an exterior styling package including carbon fiber detailing (window surrounds for example), Matt black badges, privacy glass, sports exhaust and 20" wheels to name but a few items. The 20" wheels will replace the stand 19" items. The RS5 will also include a carbon roof.
The interior will include RS sport nappa leather seats and honeycomb stitching.
Pricing of both cars are as follows:
RS4 avant carbon: 71,625 OTR
RS5 carbon: 75,400 OTR
Info provided by auto express:
http://www.autoexpress.co.uk/audi/rs5/101136/audi-rs-4-and-rs-5-carbon-editions-priced-from-71k
Cheers
Steve