The ZIP format is widely used, both by itself and as part of other widely used formats such as ODF, yet it’s never been standardized. Caroline Arms of the Library of Congress has informed the JHOVE2 list that there’s a new study group under ISO/IEC JTC1 SC34 WG1, which is looking into the standardization of ZIP. There is a Wiki for this study as well as a mailing list archive.
Membership in the group requires going through the appropriate national standards group.
Mad File Format Science 