John Fay for Series Seven

Hello. In the last post, Series Seven was confirmed by the showrunner Steven Moffat. Today, John Fay is confirmed to write for Series Seven. Fay has written for Torchwood: Children of Earth and he is writing a few episodes of Miracle Day. In Children of Earth, Fay killed off one of the main characters Ianto Jones. Will he do something similar in Series Seven? We'll just have to wait a year to find out.