Also some spelling changes from earlier books:
Nihrimsûl
Illisserû
Not sure why Nihrimsul got an extra circumflex after twelve years without one. I think you can use them interchangeably.
Recent discount at the diacritic store?
There are all sorts of place in the books where they come and go, although not in those two instances specifically.
One day maybe we get a truly edited, directors cut of the whole series...