David Brooks posted a little more info about IPv6 testing on his blog:
Comcast has been very aggressive testing IPv6, as far as I know FairPoint has not announced plans to roll out IPv6. In the short term expanding DSL service to unserved areas is more important.
The current state of IPv6 in consumer gear is pretty bad. Holding off a little is probably not a bad idea. Hopefully by this time next year they will have a mature roll-out.