Veteran Diablo III players are in for a treat next Season with Blizzard and the team looking to make it a game changer when it comes to high level end-game play. It's all incredibly interesting stuff for veteran players and newcomers alike (thanks the the recent Nintendo Switch release) as it focuses on making just about every legendary set viable for high-level Greater Rifts. And then there's the Seasonal 'game changer'.

Which "gives all Seasonal players the legendary power from Ring of Royal Grandeur", a staple in every build that took up either a ring slot or the jewelry slot on Kanai's Cube. Also, "When completing a Greater Rift level 70 solo for the first time in a Season, a Primal Legendary is guaranteed to drop from the Rift Guardian". Also, Primal Legendaries will be marked by a red beam when they drop, and by a red pentagram icon on the mini-map. Very cool.

The update aims to shift the focus away from Paragon Points to straight up interesting builds - which will definitely shake up the handful of high-level builds that have been dominating Diablo III for quite sometime.

The following PTR patch notes for 2.6.4 are subject to change, but the numbers they indicate - well, they're incredible. And definitely game changing.

General

Quality of Life - For this patch, we wanted to include a few frequently requested Quality of Life changes and focused on better celebrating and indicating Primal Legendary drops.

• Five (5) additional Armory tabs have been added for all characters, bringing the total to 10
  
• Greater Rift Keystones are now stored in the Materials tab
  
• Any existing Greater Rift Keystones in both inventory and stash have been automatically moved
  
• Primal Legendaries are now marked by a red beam when they drop
  
• Primal Legendaries on the ground are now indicated by a red pentagram icon on the mini-map
  
• Primal Legendaries now have a red border and updated background on their icons

Greater Rifts - The gameplay of micro-managing Paragon points during the course of a Greater Rift doesn't feel like especially engaging gameplay, nor was it consistent with the other existing rules of entering a Greater Rift. In addition, the below change to matchmaking is to make it much easier for all players to find groups for Greater Rifts, as the previous window (only between Greater Rifts) is typically very small.

• Paragon points can no longer be swapped while a Greater Rift is open
  
• Players can now be matched into public games where a Greater Rift is open
  
• Players who join in this manner will not be able to enter the active Rift
  
• Players inside the Rift will be able to continue with no additional difficulty scaling until the run has been completed

Season 16: Season of Grandeur

• The buff for Season of Grandeur has been implemented. This buff gives all Seasonal players the legendary power from Ring of Royal Grandeur
  This buff does not stack with additional Ring of Royal Grandeur (either equipped or in Kanai's Cube). Unlike previous Seasonal buffs, this buff will not apply to Non-Seasonal players.
  
• When completing a Greater Rift level 70 solo for the first time in a Season, a Primal Legendary is guaranteed to drop from the Rift Guardian

Class Set Changes - We are taking another tuning pass across all class sets to improve class and set diversity at higher level Greater Rifts. Please note that these values are not final and we anticipate some adjustments to occur during the course of PTR.

All Classes

• Legacy of Nightmares - The (2) Set bonus has been increased from 100% to 500%

Barbarian

• The Legacy of Raekor - The (6) Set bonus has been increased from 2800% to 7000%
  
• Immortal King's Call - The (6) Set bonus has been increased from 1500% to 4000%
  
• Might of the Earth - The (6) Set bonus has been increased from 5600% to 20000%
  
• Wrath of the Wastes - The (6) Set bonus has been increased from 3000% to 10000%

Crusader

• Thorns of the Invoker - The (2) Set bonus has been increased from 140% to 350% and The (6) Set bonus has been increased from 5400% to 15000%
  
• Roland's Legacy - The (4) Set bonus has been increased from 3300% to 13000% and The (6) Set bonus has been increased from 50% increased Attack Speed to 75%
  
• Seeker of the Light - The (6) Set bonus has been increased from 2000% Blessed Hammer damage to 12000%

Demon Hunter

• Embodiment of the Maruader - The (6) Set bonus has been increased from 3000% to 12000%
  
• Unhallowed Essence - The (6) Set bonus has been increased from 100% to 350%
  
• Natalya's Vengeance -The (6) Set bonus has been increased from 3500% to 14000%
  
• The Shadow's Mantle - The (2) Set bonus has been increased from 1200% to 6000% and The (6) Set bonus has been increased from 50000% to 75000%

Monk

• Uliana's Strategem - The (6) Set bonus has been increased from 2100% to 9000%
  
• Inna's Mantra - The (6) Set bonus has been increased from 150% to 1500%
  
• Monkey King's Garb - The (6) Set bonus has been increased from 1000% to 1500%
  
• Raiment of a Thousand Storms - The (2) Set bonus has been increased from 100% to 400% and The (6) Set bonus has been increased from 13000% Dashing Strike damage to 60000% and The (6) Set bonus has been increased from 1300% Spirit Generator damage to 6000%

Necromancer

• Trag'Oul's Avatar - The (6) Set bonus has been increased from 3300% to 3800%

Witch Doctor

• Spirit of Arachyr - The (6) Set bonus has been increased from 4500% to 9000%
  
• Helltooth Harness - The (2) Set bonus has been increased from 1500% to 3000% and The (6) Set bonus has been increased from 4400% to 9000%
  
• Raiment of the Jade Harvester - The (2) Set bonus has been increased from 560 seconds to 3500 seconds and The (6) Set bonus has been increased from 1650 seconds to 10000 seconds
  
• Zunimassa's Haunt - The (6) Set bonus has been increased from 5500% to 15000%

Wizard

• Tal Rasha's Elements - The (6) Set bonus has been increased from 750% to 3000%
  
• Delsere's Magnum Opus - The (6) Set bonus has been increased from 3800% to 8500%
  
• Vyr's Amazing Arcana - The (6) Set bonus has been increased from 50% bonus damage to 100%

What's awesome is that it makes the Legacy of Nightmares ring set viable again, which adds bonuses to any non-set legendary item you have equipped - opening the door to what could be a whole suite of interesting and fun new builds. One point of concern though, is that these buffs will make the Torment 13 difficulty level breezier than ever, so perhaps a difficulty buff should also be on the cards.