This could be a typo, but I have to ask; is VDSL now available with up to 20mbit upload speeds!?
I found it on the spark site today:
http://www.spark.co.nz/business/shop/internet/businessbroadband
(And yes, I am aware that I have posted in the 'general' forum vs the spark one, but I'm interested in the general availability of >10mbit upload speeds, not specifically spark offering it)