Hmm, seems like a CYA to explain why there won't be any measurable results between now and 2009. Let's get those excuses in early!
Or it could be that the new models will show that the climate changes are natural, which is the conclusion that several scientists have come to after looking at computer models that take into account such natural phenomena as the El Nino pattern in the Pacific Ocean and other fluctuations in ocean circulation and heat content. See here:
http://www.freerepublic.com/focus/f-news/1878730/posts?page=28#28