I just looked again, and while it has a IPv6 "Secret Screen", when I looked at it I only see two entries: Last IPv6 Speed Test and Last IPv4 Speed Test, and both had Not Available as the result. So there's something under development, but doesn't appear very far along at this point.
To access this hidden menu, you press Home five times, FF, Down, RW, Down, FF.
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@bluej21 for the average home user they do not even understand the difference. Heck people do not even know the difference between 2.4 and 5.0. They buy a Roku and expect it to just work. As of right now there is no real advantage of IPv6 over for the average home user.