Rumble is coming to NZ in March 2008, I already have mine though. I got mine from Japan. It works with PS1/PS2 and PS3 games.
I dont like the triggers, I would prefer that they had indents on them so they dont slip when gaming, plus the there have been reports of the SixaxiS left analog stick breaking. If you go to the NZ/AU playstation forums you will see a thread of about 40 people that have had there left analog stick break, stick or become loose so badly that they were unable to play games.
It happend to me, hopefully I will get my replacement soon.