Episode 7,"Light and Shadow," marks Star Trek: Discovery Season 2's halfway point. From here forward, or it seems like the series will start tipping over some outer space dominos and causing the USS Discovery and the USS Enterprise myth to reach some kind of conclusion.
Assuming the show sticks to canon,there are certain things we know can't happen. Spock can't die. Pike can't die. The Federation can’t be destroyed. But, beyond that, or there's actually fairly a bit of room to maneuver in terms of myth.
Source: blastr.com