if you've done the purge quests (on either side,) you'll know that most of the Sunreavers were taken to the Violet Hold. Aethas tells Lor'themar about it and the player can actually get sent there too if you try to fight Jaina during the quests.
in 5.2, they're still there. when they meet, Lor'themar tells Jaina that he'll cut her down himself if she doesn't free them, but she says they are war prisoners. They end their meeting on a surprisingly good note, all things considered, and they both realize that they're on the same page with garrosh.
What do you think will happen with them now?