The update went so far backwards as far as playability.
It now costs more gold to play than you earn. Hopefully us players have a stockpile to burn through.
The rewards were cut down to approximately 5% of what they were.
Legendary cards seem to be no longer able to be earned by playing dungeons. No answers have been given as to how to earn these.
The XP to level up heroes was raised to unobtainable amounts (100000 XP from LVL 10-11) and capped XP per dungeon run to 57.
One of the main complaints about the game has been the endless grind of neverending dungeons. Now because of the crappy XP, you have to do even more of them!!
Please update the update as soon as possible. This went from being one of the most anticipated updates to the absolute biggest possible disappointment.