Bounding area and Physics Collisions?

Playing with the physic and collisions. Are the collisions based on the bounding rectangle in image editor?

Will future options be available, like polygon, circle, pixel?

Polygon is already there, it's the second option to the left, right under hotspots.

Circle is also there. If you click your object, you can find it in the properties tab on the left.

And here is what Ashley said about pixel collisions:

"I think it's worth pointing out there won't be per-pixel collisions in the HTML5 runtime - Javascript isn't fast enough. The Classic runtime uses C++'s raw speed as well as special CPU features to make it practical. There'll have to be collision polygons instead."

Thanks guys, wish the help would not point to 404 pages.