Just some good news, they seem to be making good time, I am backer #1500, and I just got the DHL Email, two days early!
They've gone from 115 to 1500 in a month. That's great!
Check out my setup instructions I wrote, and let me know if you have any suggestions once you follow through them. http://forum.flux3dp.com/t/comprehensive-flux-delta-setup-directions/637/6
I'm around 1900 and mine shows it was picked up by DHL in Taiwan today!