Hamann is offering a preview for their first customisation program involving the 2012 BMW 6 Series Convertible through a set of photos that appeared on the tuner’s official site.
Mechanical upgrades are most likely still under development, so for now we only get to see how the new 6er Convertible looks like when fitted with Hamann’s EDITION RACE ANODIZED and ANNIVERSARY EVO set of alloys. 
You can also notice a sports exhaust system with four stainless steel end pipes fitted on the 2012 BMW 6 Series Convertible, which is most likely adding a few additional horses to the car’s stock output.
We’ll be back with more details as soon as Hamann will make them available.   

Source: Hamann