You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Madonna_(entertainer)

Context:
Working with photographer Steven Klein, Madonna completed a 17-minute film called secretprojectrevolution. The BitTorrent company was selected by Madonna to release the film as part of a Madonna bundle. It was released on September 24, 2013, and consisted of the 17-minute film, its stills, a Vice interview, and a message from Madonna. With the film she launched the Art for Freedom initiative, which helped to promote "art and free speech as a means to address persecution and injustice across the globe". The website for the project has had over 3,000 art related submissions since its inception, with Madonna regularly monitoring and enlisting the help of other artists like David Blaine and Katy Perry as guest curators.

Question:
When was secretprojectrevolution released?

September 24, 2013