I just found this article about 'Michael Jackson: Inside the Private world", which I believe to be the same film with a different title.
http://www.showbiz411.com/2010/06/26/michael-jackson-doc-draws-5000-to-press-preview-in-japan
Michael Jackson Doc Draws 5000 to Press Preview in Japan
“Michael Jackson: Inside the Private World” is a hit in Japan.
On Thursday night, 5000 people showed up for a press preview that accommodated only 200 people at a venue behind the Ritz Carlton Hotel in Tokyo. A Japanese singer appeared and sang “Human Nature.” The town, apparently, went wild.
Since then, the film, which was licensed to Japan by Jackson partner Marc Schaffel, has sold out all its shows. It’s expected to take in between $5-$8 million.
The Jackson estate has settled its issues with the distribution company, and all is well for an uninterrupted release. Both Schaffel and Debbie Rowe, mother of Michael’s two eldest kids, were there for the premiere. On Wednesday, Rowe was the guest of a Buddhist temple where a special tour and ceremony were set up for her.
The two hour movie includes a lot of intimate behind the scenes stuff with Jackson and his family, and at Neverland, It also features Japanese fans talking about Michael. It will be edited down to a more manageable 90 minutes when it’s sold in other countries."
It got a promising write-up on Showbiz411, but judging from the comments on that page, it's not a very good documentary. People found it boring, so they'd be right to edit it to 90minutes if it is sold to other countries.
However, according to one poster on MichaelJackson.com the documentary is amazing:
http://www.michaeljackson.com/id/node/870347
"Here in Japan a new film started at the movies today "MICHAEL JACKSON: INSIDE THE PRIVATE WORLD". I was running late so missed first 20-30mins of it but it was....WOW!...I'm SPEECHLESS...I cried a lot and laughted too as MJ has an amazing sense of humour. I got a poster gift too from the cinema-charming MJ on it. Not that I need charming MJ around me as I'm just a soldier forever in HEAL THE WORLD army...sorry MJ...but you know what I mean... The film is without dance-MJ talks a lot and fans talk about him.
I'm going back to see it-LOVED it MJ. Only one question. The film says (narrator's voice) that MJ loved Kentucky but in MOONWALK book MJ says he wa vegetarian. Hopefully MJ or family/children will tell us the truth one day. The film didn't show MJ eating Kentucky-just showed MJ feeding fans and staff with it. The film also shows MJ being a thrift store lover (just like me!) and shopping at those stores.
Fans or not fans-everyone must see it. It shows the kind/human side of MJ and also his strick leadership side. He's so nice and loving his fans and goes on about it, then he quietly squeezes in that the fans don't let him go anywhere wihout following him so he sounded like he was stuck in jail."
I'll be interested to watch it for the new footage but I doubt it'll be of interest to the general public. In the Japanese box office it appears to have only appeared in the chart for 2 weeks. It entered at #11 then slipped to #14 in the second week and I guess out of the chart by the 3rd week.
https://boxofficemojo.com/movies/intl/?page=&country=JP&wk=2010W27&id=_fMICHAELJACKSONCO01
Box office total of $1,278,263.