Not a problem, nice surprise :-). I picked up a 8 zone at Home Depot 10 July, when I got home and installed it I thought it was a bit weird that it had zones 9-16 listed as well.....now I see that it was a 16 zone packaged into an 8 zone box. Not sure if other packages are like this, but since you charge more for a 16 zone, I would check on it.
I'm loving it 5 days into it, but like others have said, a soil and moister tester (like Edyn smart garden) that will sync ground moisture levels in each zone back to Iro and allow for more accurate and responsive watering would be a great feature.
Also, I too didn't know which end to start plugging in the zone wires, so I started closest to the "C" wire.....I picked wrong and found out zone 8 is the slot right next to the "c" wire and zone 1 is the farthest away (bottom left). If one does put the wires in wrong, there are some options...push in the button and remove the wires and start over (called doing it the right way), or just disable all of the non-connected zones and label the connected zones accordingly.
Keep up the great work!