To summarize the research and the NY Times article:
At the time of the 2006 update, the relationship between Agent Orange and ischemic heart disease was labeled as "Inadequate or Insufficent Evidence to Determine Association." In the current 2008 report, the relationship has been redetermined as "Limited or Suggestive Evidence of Association."

At the time of the 2006 update, the relationship between Agent Orange and Parkinson's was also labeled as "Inadequate or Insufficent Evidence to Determine Association." In the current 2008 report, the relationship has also been redetermined as "Limited or Suggestive Evidence of Association."

These changes in categorization may lead to more Agent Orange victims receiving the benefits to which they are entitled, and of which they need.

You can read the New York Times article here: Report Sees Agent Orange Link to More Illnesses, 7/24/2009, by Janie Lorber, 7/24/2009.

You can read the full 587 page study here for free: Veterans and Agent Orange, Update 2008, by Committee to Review the Health Effects in Vietnam Veterans of Exposure to Herbicides (Seventh Biennial Update), Institute of Medicine.