Deathly Hallows Translations Give Key to Book 7?

HarryPotter.nl, J.K. Rowlng's Dutch publishers' site, has listed the working title of the seventh book - not as the expected Harry Potter en de Dodelijke Heiligen, the literal translation, but Harry Potter en het Fatale Heiligdom. That means the title is something like "Deadly Shrine," "Deadly Sanctuary," or, as some readers have suggested, "Deadly Saints."

However, the site notes that that is a tentative title, and that a definitive one will follow when we know more about the content of the book.