Yahoo and IPv6

http://help.yahoo.com/l/us/yahoo/ipv6/general/ipv6-05.html "Will IPv6 become a permanent change on June 8, 2011? No. World IPv6 day is a 24-hour trial period in which we will publish our content on both the IPv4 and IPv6 servers. Yahoo! is participating in order to help prepare our services (as well as your hardware) to help ensure a smooth transition for when the IPv4 addresses run out. " Huh… I thought IPv4 addresses had run out already…. At IANA level and now for anyone in the AP region at least.