The clip of 'This Is It' - which details the late pop icon's rehearsals for the 50 shows he was due to perform in London from July - will air at 9pm in the US on Sunday night (13.09.09).
The VMAs executive producer Dave Sirulnick said: "There's obviously lots of emotion around Michael and the memory of Michael, but I think it's going to be a pretty celebratory kind of night all around."
The movie's website will go live at the same time the trailer is shown, with 'This Is It' hitting cinemas worldwide for two weeks on October 28.
The film includes footage of Michael - who died of acute Propofol intoxication on June 25 - dancing on stage, and behind-the-scenes clips of him between April and June this year as he prepared for the concerts.
Michael's sister Janet Jackson is performing a tribute to her brother and is believed to be opening the ceremony.
The 'All For You' singer has been rehearsing with up to 20 backing dancers, and practiced solidly for 15 hours this week.
Other stars are also rumoured to be preparing to honour the 'King of Pop' at the VMAs, although further details are a closely-guarded secret.
Sirulnick said: "Quite a few people have been working hard on it for quite a number of weeks now."