Our raid is over, but a number of ppl in my guild (including myself) hit after the update, and I didn't notice any changes, nor did my guild mates report any.
I also stream a number of guild members in my guild and one other guild where I have friends. None of the streamed runs seemed to function differently, though it's been a couple days for the Friend Guild and I can't remember how many of those runs were post-update.
But in any case, I've had a number of opportunities to notice significant changes, and I haven't found them yet myself.