Edinburgh's visual art festival is to have its first open call for proposals by artists as part of its programme for 2015.

The Edinburgh Art Festival (EAF) is to encourage "early career" artists to submit ideas to a panel led by festival director Sorcha Carey, and Scottish artists Christine Borland and Craig Coulthard.

At least three artists will be selected from an open call to present work as part of a group for the 2015 festival.

The programme, to run this summer and titled The Improbable City, includes more than 40 exhibitions across 30 museums, galleries, institutions, artist-run spaces and "pop up locations."

Scottish artists in the festival including Toby Paterson at the Edinburgh Sculpture Workshop and Sara Barker at Jupiter Artland as well as large exhibitions of Scottish art at the City Art Centre and The Queen's Gallery.

International artists are to have their first shows in the UK and Scotland, including Phyllida Barlow, Hanne Darboven, Kwang Young Chun and Beatrice Gibson as well as the first solo exhibition in a public gallery by American artist John Chamberlain and the first large-scale solo show in the UK by New York-based Tara Donovan.

In addition to the already-announced summer shows at the National Galleries of Scotland, there will be shows featuring work by John Bellany at Open Eye Gallery and Joan Eardley at The Scottish Gallery.

New work commissioned as part of the EAF 2015 commissions programme include Charles Avery, in partnership with Ingleby Gallery where the artist is the subject of a new solo exhibition, and Marvin Gaye Chetwynd.

Emerging artists in the festival including Samara Scott and Lauren Gault at Jupiter Artland, France-Lise McGurn and Beatrice Gibson at Collective and a group show at one of Edinburgh's newest venues, The Number Shop.

Sorcha Carey, director of Edinburgh Art Festival, said: "We are also delighted to continue our support of early career artists through a newly launched open call, which will provide support and an international platform for artists based in Scotland who are at the beginning stages of their careers."

Phyllida Barlow will exhibit new site-specific sculptures at The Fruitmarket Gallery and a "monumental installation" of hundreds of framed works in a solo exhibition by renowned German conceptual artist Hanne Darboven will be at the Talbot Rice Gallery, the University of Edinburgh.