War of words HARRY & MEGHAN'S BOLD PLAN

The Sussexes' explosive book clashes with another VIP's memoirs

- Judy Kean

It's being touted as one of the most revealing royal memoirs ever written a no-holds-barred look behind the scenes at what life has really been like for Prince Harry.

But as it gets closer to being published, there's been no confirmation of when Harry's untitled tell-all biography will hit the shelves, and publishing insiders says there are fears the book will be overshadowed by one written by former US First Lady Michelle Obama.

Michelle, 58 - whose autobiography Becoming was one of the best-selling books of all time has announced her follow-up, The Light We Carry, will be out in November, which is around the time Harry's book is due to be released.

After much fanfare when the memoir was announced last year, very few details have emerged about the "intimate and heartfelt" memoir, which Harry has been working on with acclaimed ghostwriter J.R. Moehringer.