My upstream ISP does not support IPv6

The biggest complaint that I hear from ISPs, is that their upstream ISP does not support IPv6 or will not provide them with a native IPv6 circuit. Is that bull? I thought the whole backbone is IPv6 now, and it is only the residential ISPs that are still figuring it out because CPE are still not there yet. Where can I get more information? Any list of peering ISPs that have IPv6 as part of their products? It seems to me the typical answer sales people say when asked about IPv6: "Gosh, this is the first time I'm asked this one".