You can download the Game add-on here, and here are the details from the official press release :
To celebrate the winter season, Rare and BigPark today announced the “Midnight Mountain Ski Pack” for “Kinect Sports: Season Two.” Available on Xbox LIVE for 400 Microsoft Points, the action-packed game add-on includes three icy cool new slopes to keep the all-ages fun going throughout the ski season and beyond. As a free test run, players can download the ‘Pitch Black’ course free of charge to get a taste of the new content and a leg up on the competition.
Dare to take on Midnight Mountain with the new Skiing content that is sure to get hearts pumping. Set against the cloak of night, the “Midnight Mountain Ski Pack” provides an avalanche of fresh downhill fun with three floodlit ski runs. The Ski pack is available in all modes and includes new achievements to test speed and agility, and Challenges to send to friends both online and offline and in the Challenge Play mode on Xbox LIVE.
The three new courses in the “Midnight Mountain Ski Pack” include:
· Backwoods Blast – A high-adrenaline precision course through the forest with narrow straights, dizzying twists, and steep rollers to put your focus to the test.
· Pitch Black – For skiers who like to get airborne, this terrain-heavy course sports big jumps, steep banks, giant rollers, and vertical drops, where jumping is the key to getting a great time.
· After Hours – An Advanced Slalom course built for more gates and a faster rhythm – ideal for speed fanatics and classic racing fiends.
The “Midnight Mountain Ski Pack” is the latest in a series of game add-ons released for “Kinect Sports: Season Two.” Additional downloadable content will be made available in 2012, each release including some element of free content to keep you on the field and in the game. Stay tuned for details about “Challenge Pack #2,” coming in February 2012, and even news of a whole new sport!