Right now there are many data formats (many commercial and open source programs have their own) and GEDCOM is the de facto standard for interworking. It has many deficiencies. Is there work underway to come up with a replacement.
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The Family History Information Standards Organisation is in the process of being formed to address the standarization of genealogy data and exchange. People or organizations interested in participating can find information here.
It is not clear is the above efforts will merge or compete.