Board Thread:TV Show Discussion/@comment-1399600-20160629121258/@comment-25371179-20160731232014

I am absolutely positive that Bran will tell Jon the truth, perhaps even as early as the first episode, if he makes it back to Winterfell that early. This piece of information can't just be given to us because it's a cool little fact - it will greatly impact Jon Snow's character. Since the first episode, Jon has struggled with not having the knowledge of who his mother is. How will he come to accept his true parentage? How will he look at Daenerys when she inevitably comes to Westeros? Will he have an identity crisis? Put simply, this is all gold for character struggle and development. I can't imagine Bran holding it back from Jon. (Also, it needs to be explained to the audience! There are lots of people who actually seem to think that Ned and Lyanna were in a Jaime-Cersei situation.)

But I can imagine them holding it back from the other lords of the North, since they might not be as open-minded.