So, did you get that bag of pooh yet?
Arrived today. No pooh, but it's a SP120 RGB "Elite" vice the original "Pro". Corsair's lighting controllers only support one model of fans so there's a chance this one wouldn't slave into the existing controller, but I've got a spare lighting controller, and this fan is PWM (the one it replaced was only 3 pin).
So.... I ended up getting a slightly better fan for my troubles.
edit: I didn't tear my PC apart to confirm, but both fans are the same line, and both have "8 individually addressable LEDs" so there's a strong chance that they're compatible with each other on the same lighting node.