It’s here.

It looks like Apple removed any way to turn off IPv6. I’ve only been poking around the settings for a few minutes, but I don’t see a way to disable it. Not sure if that’s good or bad.

Apple had more to say about IPv6 support in iOS (that’s still weird to type) at their WWDC 2010 conference. The Core Networking talk had an update on IPv6; Video (HD) and Slides (PDF) are available. They encouraged developers to make their apps IPv6-clean. I wonder if Apple will start rejecting IPv4-only apps from their App Store?

They claim to support stateless DHCPv6, but I haven’t yet tested this. When I get some more time, I’ll test it in an IPv6-only network.