Random House Children's Books is to publish the final book in Christopher Paolini's Inheritance Cycle this autumn.
The fourth title will be called Inheritance, following Eragon, Eldest and Brisingr. It will be published in the UK on 8th November 2011, simultaneously with the US, Canada, Australia and New Zealand, as an £18.99 hardback, as well as in e-book and audio formats.
RHCB m.d. Philippa Dickinson said: "We are extremely proud and excited to be publishing Inheritance. Christopher Paolini's books are an incredible worldwide phenomenon and readers have been eagerly awaiting the final instalment in the cycle.
"RHCB is anticipating a huge amount of interest in what is sure to be one of the biggest events of the year".
Though no details of the plot have been released, Paolini promised "all will be revealed" in this concluding book.
The first three books will all be reissued in paperback on 7th July, with new cover designs.