There's a possible XP exploit in the tunnel under Cyseal. It's not new but forgot to report it before: You can kill the 3 summons that appear at the beginning of the fight with the Skeletal Scorcher, then run away from fight without killing him. When you come back to him, his 3 allies reappear. It's only 3x130 XP each round, but I've managed to get 1.5 level that way, not sure how long we can do it, it's too boring for me to test further. All I can say is that it lasts much longer than the summons of the idole behind the fire twins that end one day or another (with that one, I went from early lvl8 to 9.5 before this patch).
I can confirm this one.
I was trying to get my Wizard and Wayfarer combo to Level 3 before hiring companions, so I took this fight on. I killed everything else, but my fire mage was worthless and my Wayfarer couldn't hope to outdo the healing of the Skeletal Scorcher's burning sensation, so I made use of the Escape button. When I came back with Jahan and Madora, everything in that fight respawned.
