The channel for summoning a demon will no longer be canceled at the start of a battleground or arena match.
Torghast
The Torghast storyline quest "Lest the Trail Go Cold" can now also be completed in Skoldus Halls, Fracture Chambers and Soul Forges. The quest text will be updated to match this in a later patch.
While it made sense that they had you search the upper reaches of Torghast for that part of the quest, it definitely was annoying to do Upper Reaches for the prior part, finish it (because why waste a run?), and then be told "Yeah, go in there again."
So...yeah. Good change in my opinion.