@Highlights:
New crafting & item mechanic: sockets & gems!
Monsters, bosses, and chests can no drop special Gems, starting from level 20!
Find gems and visit Gemma in The Chroncion, and she'll be able to add/change sockets on your equipment, as well as insert gems for you. For a price!
@Note: Gemma only appears after you've killed Captain Moore & completed the associated quest.
Auto-pickup of crafting materials
Crafting materials no longer take inventory space
Crafting materials, gems, and currency is now shared across all characters automatically
Anomaly progression and availability is now "account wide", so once you've unlocked it on any single character, all your characters can access it
@Anomalies:
Now account wide, so you only need to unlock the Anoamlies on one character
Progression is done on each character independently as before, however you now have the option to skip ahead to the maximum reached on any of your characters, by using the elixirs sold in Tinka's Domain
The character's and account's maximum Anomaly level can be found on your stat chart, near the bottom
The special Anomaly elixirs are now available at level 1
Note: These will be removed entirely in a future update and replaced with something more convenient
@Crafting:
Enchanting:
Rebalanced material costs for enchanting, particularly for Legendary items
Socketing:
Added sockets and gems
Sockets may roll on any item dropped after this update, and may be applied existing equipment by talking to Gemma in the Chronicon
Sockets are of three types: Sphere, Cube, and Star, with Star sockets being more rare and having slightly different effects
Gems are of the same three types and must be matched with the sockets
Gems also come in 3 different rarities: Rough, Cut, and Polished (ordinary/enchanted/rare) and can be combined to reach the next level of rarity (up to Polished)
Gems will have different effects in different types of equipment, based on the following equipment groups:
@1) Helm, Armor, Boots
@2) Amulet, Ring, Accessory
@3) Weapon, Offhand
Different item types may roll different amounts of sockets, with Armors rolling up to 3 sockets, and Boots only rolling 1
Items always roll the maximum amount of sockets they can, the only difference is the combination of socket types.
Note: Star sockets often count as more than one socket, so an item being able to roll 2 cube sockets, will only roll 1 star socket.
@Crafting Materials:
Are now automatically picked up like Crystals
No longer take inventory space, and are instead kept in a separate self-managed inventory
Can no longer be sold
Changed their sprites slightly
All of this also applies to the new Gems
@Crystals:
Now groups together if adjacent, creating large clusters of crystals, improving performance
The floating numbers on crystal pickup no longer stacks and instead replaces eachother for less clutter
@Enchants:
Updated descriptions of many enchants to be more clear
Bleed on hit: Now guaranteed to trigger, instead of having a 25% chance
Explode on low health: Now deals Ethereal damage
Frost Nova: Now releases a proper Frost Nova rather than a nova of Ice Spears
Health Regeneration: Increased augment caps
Mana Regeneration: Increased augment caps
Updated the following Enchants to use percentages instead of direct values:
Thunderous Orb
Frozen Orb  
Molten Orb
Voodoo Orb
Angelic Orb
Twister
Hellfire
Burst
Kill Restoration
Kill Recharge
Kill Healing
Gib Heal
Gib Regeneration
Frost Nova
Holy Nova
Death Nova
Discharge
Hurt Poison
Hurt Burn
Sludge Threads
Low Health Explode
Note: All your equipment should be automatically updated with the new enchants to reflect these changes, as well as unlocking them, should you want to scramble them. Please submit a report if you still have old versions of the enchants listed above!
@Equipment:
The value of equipment now grows with higher rolled enchants
Augmenting equipment increases its value
Gems & Sockets does not affect value
Mary's Mirror: now rolls Bleed Damage instead of Physical Damage
Mollug's One Ring: The Goblin companion now benefits from the highest element stat rather than Physical damage. Updated description.
Bat Bat: Now also rolls a Molten Orb enchant.
Sludge Treaders: Now also rolls Poison Damage
@Interface:
Crafting materials are now listed on the side of the Enchanting interface
Tweaked the display of enchants in the Enchanting interface with new colored icons
Added a dark background behind unclaimed bag slots
Added tabs for 3 separate inventories: the default inventory, materials inventory, and gems inventory
Equipment locked to other classes now have a small padlock icon on them
Adjusted some text positioning on skill info cards
Adjusted Physical damage color
Added option for short numbers (enabled by default), shortening for example 1,500,000 to 1.5M
@Killstreaks:
Added a new announcement on an extreme level..
@Misc:
Saving Cards (f10) now plays a sound
Card images are now saved with the skill or item name as file name
Volume sliders now increment with 5% instead of 10%
King Tinka will now be more offensive when introduced
Added some very small cutscenes to emphasize events / changes (Tinkas Domain first entry, Gemma's appearance, and some other)
The game will now prioritize interactions with objects in the direction you are aiming, which should help with precision when using a controller - especially near portals
@Monsters:
Champions now spawn with 4 Elites of the same type, but with randomized affixes
@Performance:
Improved dungeon save/load times
Improved average fps on low/mid range machines
General stability improvements
@Progression:
Adjusted experience gain from killstreaks again - it was scaling unintentionally high
@Skills:
Warlock:
Bursting Boils: Can now crit. Description updated to be more clear.
Vampirism: Now adds a minimum of 1 point per rank, even on low levels before it has a chance to grow with the player's level.
Tainted Blood: Now adds a minimum of 1 point per rank, even on low levels before it has a chance to grow with the player's level.
@Stats:
Increased base mana regeneration for all classes
@Unstable Dimensions:
Now roll monster spawns just like Anomalies, giving a randomized selection of 5 different types, rather than using the monsters in the current zone
@Fixes:
Fixed issue with save conversion and backwards compatibilty allowing duping of items
Fixed killstreak popups not showing the correct amount of experience awarded
Fixed crash upon reaching extremely high anomaly levels
Fixed some skill typos and other misc typos
Fixed a rare freeze on generating unstable dimensions
Fixed Hellfire enchant not working as intended
Fixed issue where satellite enchants (such as Molten Orb) would not correctly scale with your elemental bonuses
Fixed issue where satellite enchants would twitch repeatedly with buff/stat changes and reset their attack cooldowns
Fixed issue where satellite enchants could attack during loadscreens
Fixed issue where areas would spawn all enemies during the loadscreen, causing longer load times and lower average fps
Fixed issue where monsters summoned by other monsters would be different/stronger after re-entering an area 
Fixed some inconsistencies in the Enchanting interface
Fixed a way to dupe items in the Enchanting interface
Fixed not being able to drag items from the equipment slots into the Enchanting slot
Fixed entering Tinkas Domain for the first time not properly updating the associated quest
Fixed some situations in which the high walls in The Chronicon would remain visible and obscure visibility when players went behind them
Fixed some interactable items having typos in their names, such as the "Myserious Slabs"
Fixed unnamed world objects still drawing a name tag without any name in it, on mouseover
Fixed the courtyard fountain acting as an interactable object even though it isn't
Fixed issue with puzzles and secrets sometimes becoming uninteractable after a loading screen
Fixed Warlock being able to outrun Souls
Fixed several items having the wrong sound effects
Fixed the War God set granting the full set bonus at 3 pieces
Fixed the Treant Glade being marked as an optional area
Fixed the character renaming menu exiting if you hit backspace once too much
Fixed some issues with quest state overwrites
Fixed issues with targeting and selection of items and interactable objects, such as Puzzle Crystals
Fixed not being able to loot while in an attack animation
Fixed the Templar Ultimate skill Divine Intervention not working properly