Toyota uncovered a freshened 2010 Tundra on Wednesday at the Chicago auto show. Among the improvements are a new Platinum package, updated appearance and new 4.6-liter V8 engine option.

The premium Platinum package will be offered on CrewMax Limited models with the 5.7-liter V8. On the outside, a billet-style grille, chrome bumpers, special 20-inch wheels, door sill protectors and Platinum badges distinguish the range-topping truck from others.

For the cabin, the Platinum option adds a power driver's seat with memory, puddle lamps, moonroof, navigation, vented seats, unique leather seats and wood-trim shift knob and door trim. The Platinum package retails for $5,140, in addition to the price of the base truck.

On the engine front, Toyota brings a new 4.6-liter V8 with 310 hp and 327 lb-ft of torque, which replaces the 4.7-liter V8 as the mid-range powerplant choice.