I am not certain about which lights they're in yet, but I do believe Cutter is selling the U3, and also the U4.
Edit: Nevermind, I think you may have been just looking for some lights with that LED, not the emitter itself. Maybe I misunderstood.
i know it is not released as of now but i was wondering if there were any high end lights that cree let use them, like luminus did for the intimidator sr95. the P bin is not released to the public but that light has it in them.