David Bowie has been out of sight for several years, quietly living in New York City with his wife Iman. But now he's surfaced on, of all places, Facebook. Bowie has posted a message on the social network site related to a retrospective of his career that's being planned for the Victoria and Albert Museum in London, writing that, "Contrary to recently published reports relating to the announcement by the V&A of an upcoming David Bowie Exhibition. I am not a co-curator and did not participate in any decisions relating to the exhibition. The David Bowie Archive gave unprecedented access to the V&A and museum's curators have made all curatorial and design choices." But, he adds, "A close friend of mine tells me that I am neither 'devastated,' 'heartbroken' nor 'uncontrollably furious' by this news item." There's no opening date announced yet for the exhibition. Bowie has been the subject of health rumors since suffering a heart a heart attack during a 2004 concert in Germany. He's performed live twice since then -- guesting with Arcade fire in 2005 and Pink Floyd's David Gilmour in 2006 -- and turned down an invitation to perform at this year's Summer Olympics Games in London.