2d vs 3d transform-origin

Hi guys,

It looks like the ED version of the 2D Transforms spec was updated in March 2010 to align transform-origin with background-position. This is great, except that the 3D Transforms ED had no accommodating update and now clashes with the 2D Transforms spec. For instance, is 'transform-origin: left bottom 20px' specifying a 2D (left, bottom 20px) or 3D (left, bottom, 20px) transform origin?

Jen