Philip Pullman announces The Rose Field, the final part of Lyra’s story

'Lyra’s world is changing’ … Philip Pullman on the third volume of The Book of Dust. Image: Dafne Keen as Lyra in the BBC adaptation of His Dark Materials. Photograph: Screen Grab/Bad Wolf/BBC/HBO

Philip Pullman has revealed he will tell the final part of Lyra Silvertongue’s story in The Rose Field, which will come out this autumn.

It has been six years since a book about Lyra has been published – and 30 since readers first encountered her in Northern Lights, the first in Pullman’s His Dark Materials children’s fantasy trilogy. The bestselling novels, which have since been adapted into a TV series by the BBC, take place across a multiverse and feature “dæmons” – physical manifestations of a person’s soul that take the form of animals.