He may be dead, but there's talk that Michael Jackson is about to have the highest selling single of all time.

This Is It is released in the US on Monday, 5pm NZ time.

The track has been re-mixed to feature his brothers and part of the song has been leaked on-line.

A two-disc set featuring songs performed in the Michael Jackson documentary film This Is It will be released on October 27.

The Michael Jackson movie This Is It premieres on October 28 for two weeks only.

The documentary film features footage from Michael Jackson's rehearsals for his planned comeback London tour.

Jackson died on June 25 at his Los Angeles home from a drug overdose.

Michael Jackson Ultimate Collection 32 DVD + 1 CD Boxset  $77.99