Details of the mid-cycle refreshed 2011 BMW 3 Series have leaked online with rumors that the car will make its world debut at the Detroit Auto Show next week. Along with typical updates, a new trim level is expected to be added, the 335is.

This new model would include either a dual-clutch paddle shift transmission or a Sport Automatic and get special styling and aerodynamics. Some M Sport trim options will also be included, such as an M Sport steering wheel. In addition, it is expected that the 335is will feature the same engine tweaks found on the upcoming Z4 sDrive35is, with 335-hp and 332 ft-lbs of torque.

As for the standard models, look for mostly cosmetic changes with new front and rear bumpers as well as LED lights. Some minor interior trim changes are also expected, as well as some new options, like automatic high beam assist.

We'll be sure to bring you full details, with live coverage of the 2010 Detroit Auto Show starting January 11th.

More: Detroit Preview: 2011 BMW 3-Series Gets Updates, Plus More Powerful 335is Model on AutoGuide.com

I hope the 335is will be available with a 6 speed manual.