* The Book of Dust: Philip Pullman has written two prequel novels in the *Book of Dust* series, which are set before the events of *His Dark Materials*. These are *La Belle Sauvage* (2017) and *The Secret Commonwealth* (2019). He has also mentioned working on a third *Book of Dust* novel, *The Book of Dust: The Secret Commonwealth*, which will continue the story of Lyra and Will.
* Pullman's Comments: Pullman has said he doesn't plan to write any more books in the *His Dark Materials* trilogy itself, but he has also expressed interest in exploring other aspects of the world he created.
* The Future of *His Dark Materials*: With the recent success of the HBO series, it's possible that the world of *His Dark Materials* could be revisited in other forms, like more television or film adaptations.
So, while it's unlikely that Pullman will write another book directly in the *His Dark Materials* trilogy, the world and its characters will likely continue to be explored through other mediums, and there's always the possibility of a new *Book of Dust* novel.