The world IPv6 day is finally here. Several large organizations are participating. Google is now responding with an IPv6 address for when you ask their DNS forcing clients to try IPv6 prior to IPv4.

Some statistics about IPv6 traffic can be found here: For the Internet Exchange in Amsterdam and for Akamai
It is hard to tell right now if there is a significant increase in IPv6 traffic around the globe.

If you know any other sites that provides real time statistics, let me know.