Prince Harry's biographer Omid Scobie launches furious attack on 'power hungry' Prince William

A publishing source suggested Scobie’s 416-page book will contain “bombshell after bombshell”.

“Some are even speculating it may name the person who questioned what colour Archie’s skin would be,” the insider told The Mail on Sunday.

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Scobie also accused Queen Camilla of going to “dangerous lengths to preserve her image”.

The book, which is due out on November 21, includes interviews with “current and former Palace staff”.

Chapters will allegedly focus on the Queen’s death, the Prince Andrew scandal and the issue of race within the Royal Family.

However, Scobie’s latest book is triggering a backlash from fans of the Firm on social media.

A person tweeted: "Power hungry had he called out the right brother."

Another wrote: "Shocking that Harry and Meghan's biographer Omid Scobie brands Prince William 'power hungry' and King Charles 'unpopular'."

Scobie, 42, co-authored a separate book about the Duke and Duchess of Sussex called 'Finding Freedom'.

It is unknown whether the Sussexes had any input in his latest book.

Scobie does not shy away from criticising remaining members of the Royal Family.

In a social media post uploaded on Friday, he said: “Even if this was a choice made by the hosts (and it probably was), the optics of the King and Queen walking on a red carpet to avoid soil at Nairobi National Park are pretty ridiculous and out of touch.

“A clued up Palace aide could have easily asked for it to be removed.”

Charles and Camilla visited Nairobi National Park during the couple's state visit to Kenya on Wednesday.