From what I heard they will be doing the First halves of a Feast of Crows and a Dance with Dragons because both books has events happened at the same time. So:
If you're basing these spoilers from the books continuity, just know that the timeline between the 4th and 5th books are simultaneous. The show however, is an adaptation of the books so not everything carries over.
If The Winds of Winter and A Dream of Spring isn't written before the show catches up, the producers of the show already has a plan for that.
Jon won't die this Season because Jon gets stab at the end of the Feast of Crows so maybe next season. However, even the books, the writing never said he dies. It just states that he was stabbed a few times and it was cold. The writing allows the reader to assume he dies but never fully states it.
If you're basing these spoilers from the books continuity, just know that the timeline between the 4th and 5th books are simultaneous. The show however, is an adaptation of the books so not everything carries over.
If The Winds of Winter and A Dream of Spring isn't written before the show catches up, the producers of the show already has a plan for that.