Board Thread:TV Show Discussion/@comment-25620072-20150615235420/@comment-3035448-20160223024723

Well, Dan and Dave have stated for the record that they had to guess who Jon Snow's mother in order for GRRM to give them the green light to make the series, and GRRM has said she will be revealed at some point. So yeah, I think there is a very strong possibility that Jon will come back at some point.