In the Bootcamp demo project in the latest release of Unity 3 I noticed no trees were animated.
Is this feature gone in v3?
We ask the same thing here: http://forum.unity3d.com/viewtopic.php?t=64377
From my experience, you have to add “wind area” which creates wind in that area where you place it and “animates” the trees including the leaves, same with cloth. Maybe there were no wind areas added to the bootcamp demo.