HI Spud2003 , Haven't we discussed this before, was it you looking for a trial of IPV6 ??? apologies if i have not remembered correctly.
I agree that IPV6 is coming, but its glacial movement (very slowly).
In my view there is nothing that is driving this.
let's look at the internet of things.
CCTV , Fridges (some of which spam email look it up is quite funny it it was not so serious), washing machines., bins, tablets, TVs, TV boxes sky for example. All of these (except CCTV) do not require inbound connections. If their are reporting its typically to a web site, which may contact the user by various means. There there is the wearable tech, most this interfaces via Bluetooth to mobile device, Again, no need for additional IP addresses. The limiting factor may be the default class C subnet common on most routers, i.e 192.168.0.1, but there are other options to enlarge this.
Until a number of large sites make it clear of their intention to disable IPV4 usage then there will be no need for IPV6.
When that time happens then the migration will be swift, and some ISPs who do not have a good plan in place will be in trouble. I suspect Zen would have done a lot of work in the back ground , and are purchasing IPV6 compliant devices, but have chosen to put on the the deployed project.