По мелочи в основном, фары, бампер, цвет внутренней отделки, 3й ряд сидений.
Вот здесь достаточно полное описание.
The Toyota Highlander gets a number of visual changes, some new interior features and reshuffled equipment packages for 2011. Offered in front- and all-wheel drive, the Highlander crossover comes with a four-cylinder or V-6 engine. Competitors include the Chevrolet Traverse, Ford Flex and Honda Pilot.
Exterior
Toyota says the hood, lights and fenders have been restyled for 2011. Chrome accents adorn the rocker panels, and base and SE trims have new 17-inch alloy wheels. The
Highlander SE adds fog lights, a glass hatch that opens separately from the liftgate, and black roof rails. The Highlander Limited adds 19-inch wheels and silver roof rails.
At 188.4 inches long, the Highlander is one of the smaller three-row crossovers on the market. Its turning circle, 38.7 feet, is on the narrower side of its class.
Interior
Little has changed inside, but a third-row seat is now standard, and it folds into the floor in a 50/50 split rather than last year's single piece. The second-row bench features a removable center seat that stows in a compartment below the front-seat center console. Without it, the second row converts into two captain's chairs with a center aisle or a center console (also removable). Both seats can recline and adjust forward and back, and the passenger-side seat has a walk-in feature for easier third-row access.
Fold all the seats down, and the Highlander's 95.4 cubic feet of maximum cargo volume is class-competitive. With the second and third rows up, however, there's just 10.3 cubic feet of cargo volume — small for this league.
New for 2011 are standard air-conditioning controls for rear passengers; last year's Highlander had air vents but no separate rear controls. Other standard features include cruise control and a CD stereo with an auxiliary MP3 jack. The SE adds leather upholstery, heated front seats, power driver's seat, moonroof, backup camera, USB/iPod stereo integration and a leather-wrapped steering wheel with audio controls. Limited models add a keyless access system with push-button start, three-zone automatic climate control, faux wood trim and a power passenger seat. Many features included on higher trims are optional on lower ones; other standalone options include a navigation system and an upgraded JBL stereo.
http://www.cars.com/toyota/highlander/2011/expert-reviews/?revid=56634
практически созрел к тому чтобы пересесть на Акуру РДХ от 08 гв в комплектации Техно. говорят тачка огонь, надежная, да и внешний вид у нее просто ляля 
