On 8 June, 2011, http://googleblog.blogspot.com/2011/01/world-ipv6-day-firing-up-engines-on-new.html, Facebook, Yahoo!, Akamai and Limelight Networks will be amongst some of the major organisations that will offer their content over IPv6 for a 24-hour “test drive”. The goal of the Test Drive Day is to motivate organizations across the industry – Internet service providers, hardware makers, operating system vendors and web companies – to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out.
For more information click on world IPv6 Day and register your self.