There's also the World of Ice and Fire coming in november '14, a large book centered on history.
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The World of Ice and Fire is a companion volume to the A Song of Ice and Fire novels, provisionally known as a 'world book'. The book is being written by Elio Garcia and Linda Antonsson in consultation with George R.R. Martin and will be published in the USA by Bantam.
Garcia and Antonsson run the largest A Song of Ice and Fire community and online concordance of information on the series on the web. Martin has already confirmed that he sometimes uses the existing online concordance to rapidly double-check information if he is away from his notes. He has joked that his co-authors know more about Westeros than he does.
They confirmed that the book will open with a historical overview of the setting, have a 'who's who' of characters and have a large amount of heraldry and at least the Targaryen family tree, possibly more. The book will also contain a large amount of artwork, The artist Ted Nasmith, best known for his work on illustrated editions of J. R. R. Tolkien books, has been asked to do some landscape and castle portraits for the book.