Patch notes!
http://us.battle.net/heroes/en/blog/20812213/heroes-of-the-storm-ptr-notes-june-5-2017-6-5-2017
Tl;dr
Map rotation gone from all modes apart from ranked play
Hero mastery taunts back in
Bolt of the storm removed from most characters, some get a character specific replacement
Thrall rework
Male mi or rework, including removal of mana regent on twilight dream. More Moofire!
I was about to post "hey infernal shrines is back, so whats the new map rotation?" but i guess there is none
"Earn epic in-game rewards in both Diablo III and Heroes just by playing Heroes of the Storm with a friend!
Quest: Play 15 Games with friend in VS AI, QM, Ranked, and Unranked as Diablo Heroes
Heroes of the Storm Rewards: Leoric's Phantom Charger, 1x Epic Loot Chest
Diablo III Rewards: Ghost Kerrigan Wings
The event begins during the week of June 12, and lasts until June 26. Click here to learn more about Malthael's Bargain."
oh its that red tint horse they showed on the Malthael video, nice
edit: oh this is nice, and deffinately something I was never sure with GFTT
"A generic marker has been added to indicate when enemies can be killed by an ability.
This marker will appear above low-health enemies for Greymane and Malthael when Go for the Throat or Last Rites will deal fatal damage to the target."