ZURICH.- The preliminary design project for the extension to the Kunsthaus Zürich is now complete. The design by David Chipperfield’s multi-award-winning team of architects has assumed its definitive form. The timetable provides for the electorate to vote on the project in 2012, with the Kunsthaus extension opening in 2017. It will create space for a dynamic, regularly changing presentation of the collection of post-1960 art, attractive temporary exhibitions, and the new speciality of French painting and Impressionism. The design by David Chipperfield’s multi-award-winning firm of architects, which emerged as winner of the competition for the Kunsthaus extension in December 2008 and was subsequently optimized in line with the jury’s recommendations, has now assumed its definitive form. During the preliminary design project, the basic architectural concept of the winning submission was refined and adapted to