Mine arrived on Wednesday but I was shorted 1 pig tail. I finished testing everything last night and it checks out 100%. I started testing Wednesday with an Arduino but the fastled lib doesn't support the new timing. If the older timing is used then the lights will flash all white and have other random behavior. For some reason you can run the 12v pixels at 5v with the old timing and they work OK. That's fine for testing but I wouldn't run them that way in a show.

After pulling out a controller and upgrading the firmware, everything works good with 12v.