Just browsing over on nesdev and saw this topic http://forums.nesdev.com/viewtopic.php?f=2&t=9522. Doesn't look like there's any documentation on it currently but if his demo video isn't fake it seems pretty awesome.
Just wanting to make people aware of this and see if there's any opinions on using it or it's functionality.
Here's a link straight to the project with his demo video. http://gutomaia.net/pyNES/