Blind children will be able to start turning the pages of Harry Potter and the Half-Blood Prince at the same time as sighted readers.
The sixth book will be available in a Braille version - which uses a series of raised dots for letters - on the big release date, 16 July.
This is the first time a book has been published to everyone at the same time.
It took two weeks for OOTP to come out for visually-impaired readers.
JK Rowling said she was delighted to be part of the publishing initiative.
One blind Potter fan - 10-year-old Richard Wheatley from south London - said he was "really excited" at the thought of being able to read the book by himself.
"Last time I had to get my mum to read it to me and it took two months to finish," he said.
"This time, I can get it as soon as my friends at school do, and even read it in the car and in bed at night when I'm supposed to be asleep!"
There are around 29,000 blind or partially-sighted people under 20 in the UK.
Publishers Bloomsbury will publish the standard and large print versions of Harry Potter and the Half-Blood Prince while the Royal National Institute of the Blind will deal with the Braille copies.