They have actually started working with business class customers this year. I'm still, rather impatiently at this point, waiting for it to trickle down to residential customers.
They have a landing page[0] that hints at the possibility, but I've never seen anything or heard anyone actually say that IPv6 is coming to residential customers.
They haven't bothered to update that page in a few years, sadly. It says "Dual Stack IPv4/IPv6 will be launched in various areas within Verizon’s FiOS network, starting Later in 2012. Check back for more information."
