Jago will meet Professor George Litefoot in "The Talons of Weng Chiang" and the two have their own Big Finish spinoff series.
https://www.youtube.com/watch?v=bNotehd-8CcVideo can't be loaded because JavaScript is disabled: Alex Kingston on the future of River Song (https://www.youtube.com/watch?v=bNotehd-8Cc)
Kingston is clearly having a ball with the The Diary of River Song series[...]