Cameras stand in keen anticipation around County Hall, London, for the planned April opening of the re-located Saatchi Gallery. Here, Nigella will soon be heard and young British artists (YBAs) will rise again, cloning a second generation, escaping the Turner pitfalls. Perhaps a new liaison will come between the Royal Academy and the Saatchi. How can Tate Modern hold its own, in a period of diminishing public purses?