Personally I do not believe that it will change much, as the characters would only logically be unaware of the happenings until they actually, y’know, happen.
Even though Teldrassil was revealed to burn down come BfA, no one I discussed with in-game or in teldrassil could really point it out.
The closest I can come up with would perhaps be talking about the War of the Shifting Sands, and that you may have heard whispers from higher-ups or so.