Yes, I've heard of it...I have one that I haven't used yet because it's a pain in the butt to solder to. They are currently not available mounted to a star pcb since LedEngin apparently changed the led.
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Note on soldering your "star" LED modules...I'm sure everyone knows this, but after much trial and error with these I had a "slap the forehead" moment. Don't solder wires to these while they are attached to the heat sink. The heat sink does it's job VERY well and sucks up all of the heat from your soldering iron making it a bit like trying to stick chewing gum onto oily wax paper. Of course, I didn't realize this until after I permanently stuck the LED to my "new style" heat sink with the adhesive patch. DOH!