Awesome update, especially excited about the On Collision for physics and ball and such. Much needed functionality.
Found a bug already though:
When dragging an object onto the layout from the object bar, the object is created on the most recently created layer, rather than the currently selected layer.
Whoa, just checked and even copy/paste doesn't past the object into the currently selected layer. Paste is also putting the object onto the most recently created layer.
This is a pretty big-time bug.
Adding new objects does the same thing.