Susanna Clarke, the much-feted author of Jonathan Strange and Mr. Norrell (2004), recently released her first novel in sixteen years, the well-received Piranesi. This was the first book in a two-book acquisition by Bloomsbury, leading to some speculation that that second book might be the much-rumoured Jonathan Strange sequel. However, that speculation was quashed by an interview where she indicated that a long period of illness had left her unable to work on such a large project.
The second book is instead called The Cistern and is tentatively scheduled for 13 October 2022. So far there is no plot summary or synopsis yet available.