Michael Jackson died at the age of 50 on June 25, 2009, from cardiac arrest (it would later be determined that Jackson died of "acute propofol intoxication" with the additional factor of "benzodiazepine effect"). Prior to his death, Jackson was planning on performing 50 concerts for his sold out This Is It dates in the United Kingdom from 2009 to 2010. Shortly after his death, on June 25, 2009, Sony Music Entertainment announced that they were to release a two-disc compilation "soundtrack" for Jackson's concert documentary film, "Michael Jackson's This Is It". In the announcement it was confirmed that "This Is It" would be released on October 26, 2009, one day before the film's theatrical release. "This Is It" is the sixth posthumous album to be released by Sony and Motown/Universal since Jackson's death in June 2009. The previous five albums are "The Collection", "", "The Stripped Mixes", "The Definitive Collection", and "The Remix Suite". "This Is It" was released on Sony Music's Epic Records, though, in certain countries, "This Is It" is listed under Sony Music Entertainment. The album was made available for pre-order – on Amazon as a compact disc and on the iTunes Store as a digital download. As planned, "This Is It" was released on October 26, 2009, in the US and worldwide on October 27. Currently, the CD is only available to order from Amazon.com by members of Amazon Prime service. A limited edition tenth anniversary box set of the album was released on December 11, 2019.