World IPv6 Launch
On 8 June 2011, top websites and Internet service providers around the world joined together in World IPv6 Day for a successful global-scale trial of the new Internet Protocol, IPv6.
A year later, on 6 June 2012, World IPv6 Launch makes it all real – and permanent. World IPv6 Launch represents a major milestone in the global deployment of IPv6. As the successor to the current Internet Protocol, IPv6 is critical to the Internet’s continued growth as a platform for innovation and economic development.
Source: World IPv6 Launch