After 28 years at Tate, Director Nicholas Serota steps down at end of 2016, starting as part-time Chairman of Arts Council in February 2017. New Tate Modern Switch House (architects, Herzog & de Meuron) opened to public on 17 June, housing free collection with 800 works from 300 artists. Tate Modern welcomed 1m visitors to new spaces in first month. Showing: until 27 November, Recognition (virtual gallery comparing works of art with Reuters images). Until 30 October, American modernist Georgia O’Keeffe.