A memoir by Princess Diana’s younger brother, titled “Swan Song: Diana, My Sister,” is released by Penguin and is available in print and digital formats, according to reporting from multiple outlets.

The book is described as reflecting on Diana’s life and the author’s relationship with her. Publishers note that the memoir has been translated into 12 languages, indicating a broad international release. Coverage also emphasizes the timing of the publication and its potential attention in the United Kingdom and abroad as readers and media continue to revisit Diana’s legacy.

While the sources focus on the same central details—publication by Penguin, the memoir’s title, and its translation into multiple languages—they provide limited additional specifics beyond those points. As a result, the coverage largely centers on the release itself rather than disputed claims or differing interpretations of the book’s contents.