Amy and Rory to Leave the TARDIS

It has been announced by the BBC that Karen Gillen and Arthur Darvill will leave Doctor Who during the next series, and that a new companion will be cast. Steven Moffat said during a preview of this year's Christmas special that the story surrounding the departure of the characters would be a 'heartbreaking' one.

There is more at the BBC website: http://www.bbc.co.uk/news/entertainment-arts-16207688