Harry Potter and the Cursed Childcast

There's a new Harry Potter book! Kinda. David Brown stops by with a detailed review. Is it "Harry Potter: the Next Generation"? Or some weird time-wimey fan faction? Why is it a play and not a movie? And what does that mean for the actual Potterverse movie "Fantastic Beasts and Where to Find Them"? Plus, why it's all like Batman.