You betcha. WinFS wasn't the only thing to get cut from Vista. Because development took so long, Microsoft had to get creative to save money. In order to have enough in the budget for launch marketing, Jim Allchin ordered 25% of the corners removed the final product.
Long Zheng busts this story wide open (as he so often does) in a special RTM edition of NWiT:
The torn corner was a nice touch, doncha think? :).