Three Steps To IPv6

Preparation Phase - Present to December 2008
  In the Preparation Phase, entities prepare to provide 
  Internet-facing services via IPv6-based connectivity
  while continuing to provide Internet-facing services
  via IPv4 connectivity.

Transition Phase - January 2009 to December 2010
  In the Transition Phase, entities provide Internet-facing services
  via IPv6-based connectivity in addition to IPv4-based connectivity.

Post-Transition Phase - January 2011 to the Future
  In the Post-Transition Phase, entities provide all Internet-facing 
  services via IPv6-based connectivity.

So, what are you waiting for?

ps: The draft I refered to was changed several days after I wrote this. New draft is v01 which add one year delay for first phase ending, compared to draft v00.