Harley-Davidson will introduce a new 1200cc Sportster model  released by the California Air Resources Board. The new 2012 Harley-Davidson Seventy-Two is expected to be announced at the company’s winter dealer meeting next month, and it may not be alone.

Newly released documents from the CARB reveal the Harley-Davidson Seventy-Two among the company’s 1200cc Sportster offerings alongside the Forty-Eight, 1200 Custom and Nightster.

Meanwhile, blogger Cyril Huze reports Harley-Davidson will announce the Seventy-Two as well as a new bobber called the Softail Slim (Huze uncovered the two images above, with the Seventy-Two on the left and the Softail Slim on the right).

Just as the Forty-Eight was inspired by a 1948 Harley-Davidson, the Seventy-Two draws its DNA from 1972. The image above reveals ape hangers, forward controls and a metallic red paint job. The Softail Slim will be based on the Fat Boy platform and feature blacked-out wheels and what looks like a matte black tank.

Stay tuned for the official announcement expected later this week.

[Source: CARB, Cyril Huze Blog]