As a follow-up to my earlier post about leaving IPv6 enabled in the OS and bound to the NICs, I wanted to share some additional resources from my IE bookmarks:
Arguments against disabling IPv6 http://blogs.technet.com/b/netro/archive/2010/11/24/arguments-against-disabling-ipv6.aspx
How will it affect your business if you do not embrace IPv6? http://blogs.technet.com/b/erenturk/archive/2010/11/17/how-will-it-affect-your-business-if-you-do-not-embrace-ipv6.aspx
IPocalypse Now http://blogs.technet.com/b/canitpro/archive/2011/01/31/ipocalypse-now.aspx
IPv6 Forums http://social.technet.microsoft.com/Forums/en-US/ipv6/threads
US Federal Directive to Support IPv6 http://blogs.technet.com/b/ipv6/archive/2010/10/01/us-federal-directive-to-support-ipv6.aspx
Why do I need to care for IPv6? http://blogs.technet.com/b/erenturk/archive/2010/10/22/why-do-i-need-to-care-for-ipv6.aspx
Microsoft Common Engineering Criteria Overview http://www.microsoft.com/CEC/en/us/cec-overview.aspx#data-ipv6
Microsoft Common Engineering Criteria Scorecards (IPv6 Support is under "Data Center and Enterprise Readiness") http://www.microsoft.com/CEC/en/us/cec-scorecards.aspx?display=tech#
Also be aware of World IPv6 Day and Windows post from the IPv6 team.