News of Paris-based Serero Architects' installation at the top of the tower has been declared a hoax by La Societe d'Exploitation de la Tour Eiffel (SETE).
Bustler and Archinect reported on this story on March 17th, which then lead to countless reports from other blogs... eventually making way into newspapers such as The New York Times, The Guardian and The Daily Telegraph.
Le grand hoax: Eiffel Tower extension is fake