Its in pre-release - http://features.cpanel.net/responses/as-a-server-administrator-i-want-ipv6-support-so-that-i-can-deal-with-the-limited-allocation-of-ipv4-addressNice feature! Have you tested it yet?
I thought there were some folk running cPanel with IPv6 already, or did I imagine that?
Good to know.. ThxJust noticed that cPanel from 11.3x started offering outbound spam protection. Guess they're trying to keep up with some plesk features for once.
Still no IPv6 yet, though I think that's on bleeding edge releases.