BMW will officially unveil the 2012 1 Series M Coupe at the Detroit Auto Show in January. Meanwhile, reports are starting to crop up about an even more hardcore 1 Series M.

BMW says that initial customer reaction to the 1M will determine the need for a GTS/CSL-type car, as well as potential droptop version. “We have a cabrio unofficially,” says BMW.

The 1 Series M Coupe is expected to be produced through the summer of 2012 until the next-generation 1 Series hits the market.

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AB