J.K. Rowling teases that the new Harry Potter book will be a major tearjerker
J.K. Rowling (Shutterstock)

We don't know too much about J.K. Rowling's eighth book in the Harry Potter saga, although she promises that it will be a tearjerker. When asked by a fan on Twitter about whether the new book will make readers cry, Rowling responded that "if it doesn't, we'll be checking your vital signs."

In a followup question from a fan asking her why she's intent on making readers sad, she replied that "if you're not feeling, I'm not doing it right."

So, what do we know about this new book? We know it will be called Harry Potter and the Cursed Child and it will revolve around a now-adult Harry and his relationship with his own son. Via Mashable, here is the synopsis:

While Harry grapples with a past that refuses to stay where it belongs, his youngest son Albus must struggle with the weight of a family legacy he never wanted. As past and present fuse ominously, both father and son learn the uncomfortable truth: sometimes, darkness comes from unexpected places.

That doesn't give us a lot of concrete information, although it obviously suggests that Harry and friends weren't able to completely ride off happily into the sunset after Voldemort's defeat at the end of the seventh book.