The list of signatories to the agreement expanded in March 2007 when Sonoma County, Paso Robles, Chianti Classico, Tokay, Victoria, Australia and Western Australia signed the Declaration at a ceremony in Washington, DC.
According to Master of Wine Mary Ewing-Mulligan, Chianti Classico wines from the Castellina area tend to have a very delicate aroma and flavor, Castelnuovo Berardegna wines tend to be the most ripe and richest tasting, wines from Gaiole tend to have been characterized by their structure and firm tannins while wines from the Greve area tend to have very concentrated flavours.