I'm glad to see that the virgin are finally oficially looking into this.
It's a difficult switch that can cause some unforseen headaches for end users as much as ISPs. (many have not fully thought through the privicy risks of including your mac address in your IP address).
That said, the origional comment of "we've got enough IP addresses" was a little short sighted since the internet as a whole has run out of IPV4 addresses a while ago and we still need to be able to communicate with those who will very soon get forced onto IPV6.
On the whole though, very excited at this and if there is to be a customer trial then just show me where to sign up