The Eighth Doctor line was discontinued during the summer of 2005, followed by the final Past Doctor Adventure in November. Beginning in 2006, BBC Books continued the New Series Adventures, now featuring the Tenth Doctor, with no word (as of September 2009) whether any more Past Doctor Adventures are planned. The books continue to be published in hardback, with the exception of four novellas, I Am a Dalek, Made of Steel, Revenge of the Judoon and Code of the Krillitanes, which are paperback releases under a series called Quick Reads.