From the website of the Internet Society (ISOC), the “organisational home for the groups responsible for Internet infrastructure standards, including the Internet Engineering Task Force (IETF) and the Internet Architecture Board (IAB)“:
On 8 June, 2011, Google, 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.
This day-long trial by a few of the Internet heavy-weights will provide some empirical data that should be beneficial for the eventual transition.
According to the latest predictions of Geoff Huston, chief scientist at APNIC and Internet Engineering Task Force member that currently chairs two Working Groups, the IPv4 address space will be depleted between February and October this year. Huston makes his prediction using the widget below developed by Takashi Arano, Intec NetCore which at the time of this blog post cites those dates. This jives with the information I gathered last October that I posted.