Director Shane Salerno's highly anticipated documentary Salinger opens in Australia on Sept 5. The Harvey Weinstein-produced film revealed that five more books from the late reclusive author J.D. Salinger is slated for release between 2015 and 2020.

The Daily Beast reported that one of the books contain "five new short stories about his recurring character, Seymour Glass." Moreover, The Last and Best of the Peter Pans, written by Mr Salinger in 1962, will also appear in the books.

Mr Salinger's other unpublished works include A Counterintelligence Agent's Diary, A World War II Love Story and A Religious Manual.

Mr Salerno and co-author David Shields stated that they "wanted to know why Salinger stopped publishing; why he disappeared; and what he had been writing the last 45 years of his life." It is believed that the late author left to his estate instructions to publish at least five books after his death.

Salinger had its world premiere at the Telluride Film Festival in Colorado. The director, Mr Salinger's flame Jean Miller and other who have been part of the film, discussed the documentary in a post-screening Q&A.

No member of Mr Salinger's family was involved or contributed in Mr Salerno's film and book. The Hollywood Reporter's Scott Feinberg said that the film delivers on promise of big revelations but felt that it has veered "into tabloid-territory".

He wrote: "I feel much more conflicted about other parts of it that veer into tabloid-territory and brazenly violate the privacy that he fought so hard to protect while he was alive and residing quietly in Cornish, New Hampshire. There is a fine line between being an admirer and being a stalker, and I feel that the film -- like some of the people who it puts front and center -- isn’t necessarily on the right side of it."

Variety, on the other hand, finds the documentary shallow and wrote: "Salinger would have surely been horrified to see his personal life posthumously excavated to such a degree, and the filmmakers never really make a compelling argument that it should be. Despite bouts of armchair analysis, they fail to draw any meaningful connections between Salinger’s reclusivity and the themes of his work."

See the trailer for Salinger below:

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