Not evil, I just think it's not suitable for very young kids until they understand fact vs. fiction, and why Christians are against witchcraft, and separate that from the deeper story of love that is Harry Potter.
It didn't change so much, but there were some SURPRISING and HEARTBREAKING facts in here (what do you mean Dumbledore fell in love with Grindewald?! Huh?! And why let Arthur live and not Sirius?! Why?! WHYYYY).