Almost 35 years after “The Handmaid’s Tale” shocked the world, Margaret Atwood has finally given birth to “The Testaments.” This isn’t just the most anticipated novel of the year; it’s one of the most anticipated sequels of the modern age — like Harper Lee’s “Go Set a Watchman” flying in on Harry Potter’s broom. Last fall, the Annunciation of “The Testaments” was heralded around the world. In August, blessed reviewers received preview copies printed with a false title and author, lest the book’s revelations slip preemptively into the wrong hands. A week before the novel was published, it was already shortlisted for the Booker Prize. And on Sept. 10, Atwood’s sold-out, publication-day appearance at the National Theatre in London will be live broadcast to 1,300 cinemas from Canada to Malta. Blessed be the fruit!