Some highly summarised takeaways from the notes:

• Items
  • 5 new Class Uniques, 1 new Uber Unique
  • 5 new Class Aspects, 2 new General Aspects
• World & Experience
  • World Tier 2 gives +20% gold and +15% drop rate
  • Higher level enemies give less experience now
  • Powerleveling with one player sitting at the entrance of the dungeon was nerfed
  • Helltides got a bit harder and take more cinders for chests
  • Monsters' HP scales higher with more players in a party (85%/player -> 100%/player)
• Balance
  • Various rebalance changes, most underutilized spells/aspects got buffed, only minor nerfs (to spells/aspects) it seems
  • Various nerfs to item affixes including Vulnerable Damage, Cooldown Reduction, Crit Damage, Damage Reduction
  • Inherent stats for Swords (Crit Damage), Crossbows (Vulnerable Damage) and Offhands (Cooldown Reduciton) have been heavily reduced
  • Damage % affixes have been buffed

I didn't have time to go through all the details and especially the single class rebalances, but I think this is the most relevant info from these patch notes. If I forgot something let me know.