Yes. NearlyFreeSpeech.NET strongly supports the migration of the Internet to IPv6. Most of our own sites, including www.nearlyfreespeech.net and members.nearlyfreespeech.net are IPv6 enabled. We also support IPv6 for ssh access to member sites.
We also offer IPv6 support for HTTP/HTTPS access to member sites hosted here. It can be enabled on a per-site basis from our member interface, but since IPv6 support is not yet ubiquitous on the Internet, it is not yet enabled by default.