The late Ronnie James Dio’s long-awaited autobiography, “Rainbow In The Dark: The Autobiography,” will finally be released on July 27. Pre-orders are available via simonandschuster.com. Here’s a description of the book: “The long-awaited autobiography by one of heavy metal’s most revered icons, treasured vocalists, and front man for three legendary bands—Rainbow, Black Sabbath, and Dio.…