Tate St Ives closed this autumn so that work can proceed in earnest developing the new build.
The new Tate St Ives will transform existing spaces and create new areas for displaying more artwork, allowing visitors to engage more deeply with art. The new gallery will be able to accommodate larger scale artworks and installations and give visitors a more relaxing and social visit.
During winter 2015 through spring 2016, Tate St Ives are planning a period of major construction in the existing gallery. This will involve a temporary closure; the Barbara Hepworth Museum and Sculpture Garden will remain open throughout and there will also be a Visitor Centre.
http://www.tate.org.uk/about/projects/tate-st-ives-project