The ISO 26300 is the international standard XML format for office documents, also known as the Open Document Format or ODF. The newly released iWork '08 supports the Open Office XML (OOXML) document format, which is still not an ISO-approved standard. It would be beneficial to all if the iWork suite of applications, namely Pages, Keynote and Numbers, support Open Document Format.
We appeal that you release an update to the latest version of iWork suite to support ISO 26300. In addition, we hope that you support the ISO 26300 standard in future Apple products that involves office documents.
http://www.petitiononline.com/appleodf/petition.html
BTW, what is the status of Campaign against OOXML at BIS? any updates?