I noticed something while putting stuff on the AH, blizz put in a nice feature where it will remeber the price of an item(i.e. I was putting up a ton of arcane dust and it kept remebering the original buyout and bid price).
edit- I didn't see this in the patch notes, but I may have overlooked it.
1.) He comes up early, maybe 10-20 seconds earlier.
2.) Adds in the middle are no longer MCable.
3.) The damage from Geyser can hit anyone in the raid including people on platforms, but the knocback ALWAYS hits his primary target (tank) causing your tank to be knocked back 50% of the time or so, making threat generation very difficult.
4.) Can't confirm this, but spout seems to be going faster.
5.) The adds no longer despawn, but in cases where they would respawn they move to their original spawn location.
We've been mostly one shotting lurker for a while and he is significantly harder for us, enough that we moved on for the evening after three tries. Our dps was way off on the adds in the middle, we were getting one dead by the time he came back. Contrast this to how it was before, where everything would be dead with 10 seconds to spare.
Also just to note, Pattern: Belt of the Long Road dropped off trash around Leotheras.
1.) Human phase is 15 seconds shorter. He still can whirlwind twice though which means he very often does demon transition while whirlwinding.
2.) The cooldown for insidious whispers does not seem to have been adjusted to account for the human phase being shorter. The result is he will cast 15 seconds later than he would have, which means at the outside edge he can cast it late enough that you have inner demonds up 15 seconds into the human phase. This can be VERY problematic.