While the world is starting to finally support it, the demand for it is extremely low. For us, if I had to guess, I'd say < 1% of customers have even mentioned IPv6 to us. Due to the amount of work to get it implemented it is not a high priority feature at this time.
It's actually not that hard to get it setup on an ISP/Host that doesn't support it.
Just use v6 tunneling through v4.
A great way to start there is using Freenet6. I believe the package to install through OS repositories is named 'gogoc'.
It's entirely free, and does not have a bandwidth limit. It sets up an IPv6 address on your system, and you can set it up as a router too, so it can distribute v6 to all your other systems on the network. But I'm not sure how that would work on a Host... Unless you have a Private Network setup with them, so it wont interfere with other servers. So all you'd have to do is setup one server as a DHCPv6 host, using Gogo's Freenet.