2Can did see some I thought familiar

Vonage, Ericsson, Opus One Inc,
Sprint, SES CTL Business,  XO Comunications
.......think these may be, (from 2011)

2013
http://www.uppersideconferences.com/v6world20...intro.html
http://www.ipv6conference.ch/
http://www.internetnews.com/infra/ipv6-in-201...e-now.html

.....lot of stuff out there, here's a Forum for Ipv6:  http://www.ipv6forum.com/ .....too funny, thinking about tired and saw the IPv4 Exhaustion Counter to the left on the forum site  ..........site looks worthy.

Keep the Roll On and Have Fun.