Is this a technique that you can do in blender today or a new feature?
A new feature. They implemented it for an effect that the Blender Foundation needed for a movie they’re working on. It’s supposed to be implemented in the next release.
If you go to the www.blender.org forums, you might find a test build with the feature already implemented.
The Testing Builds forum is at:
http://www.blender3d.org/forum/viewforum.php?f=18&sid=1b2b31b4550e052581e6dcbf1de4ba8d
A couple of new features they also have are softbodies and fluid dynamics.
thanks winged one 
im going to boot into linux and attempt compileing the source.