The Diary of River Song: Series Eight

 was a full cast audio anthology released in January 2021 by Big Finish Productions.

Publisher's summary
It’s River and robots! Professor River Song is an expert in many things, but her tech skills are tested in these encounters with robotic friends and foes.

Over the course of four episodes River will battle Mechonoids on an ice world, meet K9 in a ‘forever home’, and help a treasured android friend discover her destiny in the stars.

8.1 Slight Glimpses of Tomorrow by James Goss

8.2 A Brave New World by Tracy Ann Baines

8.3 A Forever Home by Alfie Shaw

8.4 Queen of the Mechonoids by Jonathan Morris

Further story details to follow.