Verified on build 25080141Regulation 1.17from 1.16.1

Patch 1.17

Regulation 1.16.1 → 1.17: 45 numbers changed. Every one is listed below with its before and after value.

In short

Guard boost up on 23 Greatshields (median +4)
Weight down on 15 Greatshields (median -1)
Fire attack up on 2 Perfume Bottles (median +7.5)
Lightning attack up on Lightning Perfume Bottle (+8)
Magic attack up on Chilling Perfume Bottle (+7)
Physical attack down on Carian Sorcery Sword (-31)
Physical attack up on Deadly Poison Perfume Bottle (+6)
Which stats scale which damage changed on Carian Sorcery Sword
Added: 8 weapons, 2 enemies, 18 armor pieces
95 player attacks changed (motion values, stance damage and similar)
Also changed: which stats scale which damage, player attack behaviours, projectiles (spells, arrows, thrown items), starting classes and NPC loadouts, crafting materials, items (consumables, spells' item data), item pickups, enemy AI, weapon upgrade scaling, shop stock, status effects and buffs, weapon skills, weapon hitboxes

Weapons 30

Weapon	Changes
Ant's Skull Plate Greatshield	Weight13.5→12.5 Guard boost63→70
Black Steel Greatshield Greatshield	Weight19.5→18 Guard boost69→71
Briar Greatshield Greatshield	Weight9.5→8.5 Guard boost58→62
Carian Sorcery Sword Thrusting Sword	Physical attack69→38 Which stats scale which damage10,000→20,010,800
Chilling Perfume Bottle Perfume Bottle	Magic attack105→112
Crossed-Tree Towershield Greatshield	Weight16→15.5 Guard boost67→71
Crucible Hornshield Greatshield	Guard boost60→70
Cuckoo Greatshield Greatshield	Guard boost64→70
Deadly Poison Perfume Bottle Perfume Bottle	Physical attack92→98
Distinguished Greatshield Greatshield	Weight17→16 Guard boost68→71
Dragon Towershield Greatshield	Weight17.5→16.5 Guard boost69→71
Dragonclaw Shield Greatshield	Guard boost61→70
Eclipse Crest Greatshield Greatshield	Guard boost67→71
Erdtree Greatshield Greatshield	Weight13.5→11.5 Guard boost60→69
Firespark Perfume Bottle Perfume Bottle	Fire attack110→118
Frenzyflame Perfume Bottle Perfume Bottle	Fire attack105→112
Gilded Greatshield Greatshield	Weight17.5→16.5 Guard boost69→71
Golden Beast Crest Shield Greatshield	Weight12.5→10.5 Guard boost60→63
Golden Greatshield Greatshield	Guard boost70→72
Haligtree Crest Greatshield Greatshield	Weight18.5→17
Icon Shield Greatshield	Weight11.5→9 Guard boost59→61
Inverted Hawk Towershield Greatshield	Weight16→15.5 Guard boost65→70
Jellyfish Shield Greatshield	Guard boost52→60
Lightning Perfume Bottle Perfume Bottle	Lightning attack110→118
Lordsworn's Shield Greatshield	Weight10→9 Guard boost60→63
Manor Towershield Greatshield	Weight16→15.5 Guard boost67→71
One-Eyed Shield Greatshield	Guard boost67→69
Redmane Greatshield Greatshield	Guard boost65→70
Spiked Palisade Shield Greatshield	Weight11.5→9.5 Guard boost59→63
Wooden Greatshield Greatshield	Guard boost56→62

Added: Leontiel's Greatsword, Hefty Scimitar, Golden Order Flail, Silver Grooved Shield, Ritual Thrusting Shield, Reverse-Bladed Sword, Reed Great Katana, Idus Sword

Enemies 0

Added: Knight Leontiel, The Noble Broken Mask

Armor 0

Added: Broken Gold Mask, Gold Tattoo (Chest), Gold Tattoo (Arm), Gold Tattoo (Leg), Silver Grooved Helm, Silver Grooved Armor, Silver Grooved Gauntlets, Silver Grooved Greaves, Silver Grooved Armor (Altered), Leontiel's Hat, Leontiel's Armor, Leontiel's Leather Gloves, Leontiel's Boots, Leontiel's Hat (Altered), Steel Helm, Steel Armor, Steel Gauntlets, Steel Greaves

Also changed

95 player attacks (motion values, stance damage and similar)
Which stats scale which damage
Player attack behaviours
Projectiles (spells, arrows, thrown items)
Starting classes and NPC loadouts
Crafting materials
Items (consumables, spells' item data)
Item pickups
Enemy AI
Weapon upgrade scaling
Shop stock
Status effects and buffs
Weapon skills
Weapon hitboxes
8 technical tables (sound, visual effects, graphics)