Will write a fuller review tomorrow, after I sleep.
DO NOT READ IF YOU DON'T WANT SPOILERS!!!
Very boring, uninteresting book if you've read even a single well-written Harry Potter fic. Harry's a clueless jerk, Ron's an idiot, Draco still made to suffer. Rowling continues to prop Snape and Dumbledore up on pedestals they don't deserve. And the idea of Bellatrix and Voldemort having sex, blegh. Only the most heteronormative person would not sense the romantic possibilities between Scoripus and Albus.
Only two positive parts: Hermione is Minister of Magic and Scorpius is awesome. He's the sole reason this book gets more than 1.5 stars.
Can someone please tell JKR to stop the money-grabbing? She already blatantly lied that this play wasn't a sequel and yet it was. Enough is enough. Especially all that racist crap she pulled with the American wizarding school. I have pretty much lost all respect for this woman.