[jameswyse]

You can play with them just now in 0.11.2 if you run node with --harmony or --harmony-generators. Can't really use them in modules until it's in core though.

[a-l-c-o]

I wonder why even play with them until ES6 features are confirmed (though it feels like they will).

It's very interesting and tempting but would end up as a loss of time if they are not.