Here is a really, really long article about Killington in the Times Argus. You don’t need to read the whole thing unless you are very interested in Killington. The really important nugget of information is that pending Act 250 approval, which is Vermont’s Land Use and Development Law, Killington will be building "The Stash".
This will be only the fourth one in the world including Avoriaz in France, Northstar at Tahoe, and The Remarkables in New Zealand. The Stash is a "natural" terrain park usually located in a wooded area with all the features constructed from natural materials. It will be located off of the Skye Peak Express.