A New Day... was the first concert residency performed by Canadian singer Celine Dion in the Colosseum at Caesars Palace in Las Vegas, Nevada, United States.

[4] The original plan for the stage backdrop/scenery was to simply use a giant video projector, but when the lighting designer, Yves Aucoin, pointed out that this would create unacceptable shadows when dancers ran in front of it, Angelil went back to Phil Anschutz, whose AEG Live was underwriting the production, and persuaded him to contribute an extra $10 million for the construction of the largest indoor LED screen in North America.

[5] The year the show opened, A New Day... received mostly mixed reviews in the press, commenting on how there was not enough of a balance between concert and theater.

He stated, "Her run through a nostalgic trio — Etta James' first hit, 'At Last,' Peggy Lee's version of 'Fever' and the Frank Sinatra-phrased 'I've Got the World on a String' — magnified her lack of soulfulness, but they did display her capacity for mimicry: She phrases everything exactly as her predecessors did.

For 'First Time Ever I Saw Your Face,' it appeared Dion and her musical director Claude (Mego) Lemay had the softness of Roberta Flack's original in mind.

It's conceivable that future audiences will have more rapport with Dion and her music than opening night's high rollers and invited guests.

It's been a long time since Dion flew on a harness rigging, or dressed up like the "Pat" character on 'Saturday Night Live,' with slicked-back hair and hitched-up, man-boy suspenders.

The world's largest hi-def screen no longer steals the show as it did before Best Buy shoppers knew the difference between a 720p and 1080p TV.

[citation needed] Reportedly, another DVD was recorded between 2005 and 2006 with Celine having long brown hair and new costumes as many different extracts have appeared.

[citation needed] Finally, A New Day... was re-shot in high-definition during the 17–21 January 2007 week and released on DVD on 7 December 2007 and on Blu-ray Disc on 5 February 2008.

In addition, Dion made history on 18 January 2008 when Live in Las Vegas - A New Day ... became the only music DVD to be certified triple diamond in Canada, selling over 300,000 units.

Live in Las Vegas - A New Day ... held the number 1 position on the Music DVD Chart in Canada for many weeks after its release.

Even though the official DVD contains many extras, a lot of songs which were performed throughout the years have not been included: "Nature Boy," "At Last," "Fever," "The First Time Ever I Saw Your Face", "Et je t'aime encore," "Have You Ever Been in Love", "Happy Xmas (War Is Over)", "God Bless America", "In Some Small Way", "What a Wonderful World", "Can't Help Falling In Love", "Taking Chances" and "The Christmas Song".

Audio versions of "Nature Boy", "At Last," "Fever" "Et je t'aime encore" and "What a Wonderful World" were included on the A New Day... Live in Las Vegas CD, released in June 2004