As mentioned earlier this year on Tolkienlibrary.com this book came out in the UK in April priced at £7.99.

David Brawn from HarperCollins described it as "This book is a paperback edition of the hardback and matches the other paperbacks illustrated by Alan Lee (and The Silmarillion paperback by Ted Nasmith). Its contents are identical to the hardback, with one small text correction."

I am trying to find the text correction mentioned, but if anyone knows what it is please post it here.