ISO 9001:2008 has been developed in order to introduce clarifications to the existing requirements of ISO 9001:2000 and changes that are intended to improve compatibility with ISO 14001:2004. ISO 9001:2008 does not introduce additional requirements nor does it change the intent of the ISO 9001:2000 standard.
Certification to ISO 9001:2008 is not an “upgrade”, and organizations that are certified to ISO 9001:2000 should be afforded the same status as those who have already received a new certificate to ISO 9001:2008