Live in Las Vegas: A New Day... is Celine Dion's eighth home video, released on DVD between 7–10 December 2007 in Europe, on 11 December 2007 in North America, 15 December 2007 in Australia and 19 December 2007 in Japan. It includes the record-breaking show A New Day... at Caesars Palace in Las Vegas, Nevada. The Blu-ray Disc version was also released on 5 February 2008 in North America, and between 8–22 February 2008 in Europe.

A New Day... ended on 15 December 2007, after a 5-year run of more than 700 shows and 3 million spectators. It reached one of the highest concert grosses in music history, $400,000,000.

The 2 disc DVD contains more than 5 hours of never-before seen footage, including the concert and 3 exclusive documentaries: Because You Loved Me (A Tribute to the Fans), A New Day: All Access and A New Day: the Secrets. It contains subtitles in 9 languages. The inside booklet includes richly detailed photographs and generous liner notes.

The show was first filmed as a CBS special in celebration of the opening night performance entitled Celine in Las Vegas, Opening Night Live which aired on 25 March 2003. The special only featured 8 performances of songs from the original setlist plus a Behind the Scenes / Backstage featurette hosted by Justin Timberlake.

The originally scheduled DVD release date (autumn 2004) was postponed because of changes and improvements made to the show since the initial filming. The show was recorded in autumn 2003 and included:

A New Day... was re-shot in high-definition during the 17–21 January 2007 week. According to the A New Day: the Secrets documentary on the second disc, one of the major reasons for the delay was that Dion and her producers gradually realized that Dion's change to a short blonde bob for A New Day... was highly unpopular with her fan base, and the hairstyle also looked terrible on screen during the first DVD shoot. As a result, she returned to her long brunette hair with extensions and the DVD was reshot.

The Live in Las Vegas - A New Day... DVD includes the last version of the show, performed between November 2006 and December 2007. But during previous years in the show, Dion wore alternate costumes and performed several other songs: "Nature Boy," "At Last," "Fever," "The First Time Ever I Saw Your Face," "Have You Ever Been in Love," "Et je t'aime encore," and "What a Wonderful World." Some of them are included on the A New Day... Live in Las Vegas CD, released in June 2004.

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