I just ran a typical A1 warden-butcher run and noticed a few things -
Firstly for the first time ever, there was no Defense of the Ancients event in Festering Wood (for me). And the map layout was different.
Secondly I noticed that there was no Radek the Fence in Highlands Passage (no Kyr the Weaponsmith event). Bit a shame really, this guy often saved me the town portal back to town =P.
In terms of elite spawns, I didn't notice anything different (though only 1 run, I think it'll be safe to assume).
The Warden certainly liked to spam his new Desecrate, but not once did he fire a mortar (I ventured out of melee range to test. Fight ~30s). Just him being unfamiliar with his new
toys?
Mortar minimum distance significantly increased - minimum distance is somewhere around 2/3 of where the old maximum distance was judging by the naked eye.
Item drops - rares galore! But all vendor worthy. Thought I saw some rares turn from ilvl 61 to 60 upon identification, might be that I'm paranoid. Or that its 6am in NZ.