Go Set a Watchman

The sequel to To Kill a Mockingbird has taken off like a mockingbird you're trying to kill.

But at the same time, there was trepidation, and disbelief, that Finch, the courtly model of integrity who in the 1930s defended a wrongly accused black man in Mockingbird, is portrayed as a racist 20 years later in Watchman.
The new book was written years before Mockingbird, and contains seeds of the story that eventually became a classic staple of literature. The new novel traces character Scout Finch's return home to the fictional town of Maycomb in the 1950s.
So basically this new book is the Star Wars prequels only in reverse? Or maybe Truman Capote extensively rewrote To Kill a Mockingbird after all?