There seems to be a nice momentum building with v7 now.
A couple of interesting free ICE compounds have been announced recently:
Eric Moootz's emNewton
He also assures me that he is currently working on an ICE node for his emFluids
plugin. I think he will get a much better take up with this.
Guillaume Laforge's Procedural fluid flow
http://frenchdog.wordpress.com/ <-link to video
Thiago's Function graph node
And the first commercial one I've seen: Gerstner Waves