They apply to the M-Series Tracked Feller Bunchers, Harvesters, and Shovel Loggers.

Enhancements have been made to the previously released Smooth Boom Control (SBC), as well as Improved Seat and Heated-Ventilated Seat (HVS) and Premium Radio that is XM ready. Updated Smooth Boom Control (SBC) improves the amount of pressure needed to operate a function, giving the operator more feel and control of the movement, especially during fine metering. This allows for a wider tuning range for individual functions and improves the set-up for multiple operator preferences and skill levels. A machine's ability to adapt to any operator using equipment for extended periods is important to productivity.

The new dual density foam seat provides more support and comfort during operation. With improved seat cushioning, built-in contoured lumbar and thigh support and additional clearance for their thighs, all sizes of operators can feel comfortable in any desired seating position.

Additionally, John Deere has added adjustable suspension dampers to reduce vibration and provide more variable dampening. Lastly, for improved overall comfort, a heated and ventilated seat option has been made available. All seat configurations come with either a standard wide lap belt, or optional four-point harness. Source