Sydney - Michael Jackson, the King of Pop, will tour the world with a reconstituted Jackson 5, his older brother Jermaine Jackson said in Sydney on Wednesday.

"This has been a long time coming for the Jackson family to get back together," Jackson told Australia's AAP news agency. "It's just the timing," he said. "So what we've been doing is working on the music and all the logistics."

The Jackson 5 were hugely successful in the 1970s and rumours of a reunion have been circulating for some time.

"It's going to be more like a family affair, Janet's going to open and, of course, the original Jackson 5 ... Michael, Randy and the whole family ... we're in the studio, we're planning on being out there next year," Jackson said in Sydney.

The group originally consisted of siblings Michael, Jackie, Tito, Jermaine and Marlon Jackson. Later Randy Jackson replaced his brother Jermaine. (dpa)