Square-Enix registered the trade mark: Wings of the Goddess. Wings of the Goddess is the name of the new expansion disc of Final Fantasy XI which was publicated on May 13, 2007.
From the search result on USPTO, this trademark was registered on May 10, 2007, which was 3 days before the publication. It?s possible that the actural name of the expansion disc were still to be decided several days before the publication.
View the search result here.