Everything you see here is subject to change and will infact probably go through several iterations before live.

Stat Changes

• All classes now use the same main stat: Mastery. Existing items with Aim, Cunning, Strength, and Willpower had these stats replaced with Mastery. Endurance is unaffected. Datacrons that provide a main stat other than Endurance have been updated to provide Mastery.
• Critical Rating has been rolled into Surge Rating. The new stat is named Critical Rating, and is now a tertiary stat (it's on enhancements instead of mods). Surge Rating no longer exists in the game.

Material Grade Crunch

With 4.0 there are currently no new crew skill-acquired crafting materials. New recipes will use existing crew skill-acquired materials. Current crafting materials have had their item grade / level range updated. Here's a chart:

The biggest takeaways from this chart are that Grade 11 mats are now Grade 8, and Grade 9 mats are now Grade 7.

Obsolete Materials

The following materials have beeen converted to Obsolete Materials. They have no use, and can be sold to a vendor.

Archaeology

• 
  Prehistoric Artifact Fragment
  - Grade 3 Artifact Fragment.
• 
  Alien Artifact Fragment
  - Grade 5 Artifact Fragment.
• 
  Eralam Crystal
  - Grade 2 Power Crystal.
• 
  Bondar Crystal
  - Grade 3 Power Crystal.
• 
  Phond Crystal
  - Grade 5 Power Crystal.

Bioanalysis

• 
  Bacterial Strain
  - Grade 1 Biochemical Sample.
• 
  Luminescent Cell Culture
  - Grade 2 Biochemical Compound.
• 
  Toxic Extract
  - Grade 2 Biochemical Sample.
• 
  Unknown Microorganism
  - Grade 3 Biochemical Sample.
• 
  Blue Goo
  - Grade 3 Biochemical Compound.
• 
  Medicinal Fluid
  - Grade 3 Biochemical Compound.
• 
  Cosmic Trace Particle
  - Grade 4 Biochemical Compound.
• 
  Inert Virus
  - Grade 4 Biochemical Sample.
• 
  Quick-Growth Agent
  - Grade 5 Biochemical Sample.
• 
  Psychoactive Compound
  - Grade 5 Biochemical Compound.
• 
  Red Goo
  - Grade 6 Biochemical Compound.
• 
  Neurochemical Extract
  - Grade 6 Biochemical Sample.
• 
  Viral Residue
  - Grade 9 Biochemical Compound.
• 
  Biological Compounding Chemical
  - Grade 9 Biochemical Sample.

Scavenging

• 
  Aluminium
  - Grade 1 Scavenged Metal.
• 
  Laminoid
  - Grade 1 Scavenged Compound.
• 
  Plasteel
  - Grade 2 Scavenged Compound.
• 
  Chanlon
  - Grade 2 Scavenged Metal.
• 
  Diatium
  - Grade 4 Scavenged Metal.
• 
  Resinite
  - Grade 4 Scavenged Compound.
• 
  Neutronium
  - Grade 5 Scavenged Metal.
• 
  Amorphous Carbonite
  - Grade 5 Scavenged Compound.

Treasure Hunting

• 
  Exquisite Yellow Crystal
  - Grade 1 Gemstone.
• 
  Precious Yellow Crystal
  - Grade 2 Gemstone.
• 
  Immaculate Yellow Crystal
  - Grade 3 Gemstone.
• 
  Pristine Yellow Crystal
  - Grade 4 Gemstone.
• 
  Flawless Yellow Crystal
  - Grade 5 Gemstone.
• 
  Perfect Orange Crystal
  - Grade 6 Gemstone.
• 
  Perfect Yellow Crystal
  - Grade 6 Gemstone.
• 
  Impeccable Orange Crystal
  - Grade 9 Gemstone.
• 
  Impeccable Yellow Crystal
  - Grade 9 Gemstone.

Biochem Vendor Supplements

• 
  Single-Pulse Implant Processor
  - Crafting Material.
• 
  D-Package Implant Processor
  - Crafting Material.
• 
  Double-Pulse Implant Processor
  - Crafting Material.
• 
  Advanced Power Implant Processor
  - Crafting Material.
• 
  Rybcoarse Implant Processor
  - Crafting Material.
• 
  Synth-net Implant Processor
  - Grade 11 Crafting Material.

Misc.

• 
  Perfect Upari Crystal
  - Rare Crafting Material.
• 
  Enriched Durasteel
  - Rare Crafting Material.

Crafting Components

Most crafting recipes have been updated to require pre-crafted components rather than raw materials. These crafted components require 2x each of the two gathering materials for their item grade and 2x of the vendor supplement for the item grade. War Supplies still require raw materials for crafting.

Example Component:

Farium Armor Assembly Component

Difficulty:

450 465 480 495

Components:

2x

Vanadium Flux

2x

Farium

2x

Molytex

Farium Armor Assembly Component

Grade 8 Armormech Combined Component

Created using the skills of Armormech to combine Farium and Molytex. This material is used in nearly all Grade 8 Armormech Schematics.

Requires Armormech (450)

Exotic Crafting Material Sources

• Personal Conquest Goal -
  
  Strategic Resource Matrix
• Hard Mode Flashpoints -
  
  Exotic Isotope Stabilizer

New/Changed Modifications

This is not an exhaustive list.

• 
  Advanced Resistive Armoring 43
  - Crafted by Armormech
• 
  Advanced Versatile Armoring 43
  - Crafted by Synthweaving
• 
  Advanced Resistive Barrel 43
  - Crafted by Armstech
• 
  Advanced Versatile Barrel 43
  - Crafted by Armstech
• 
  Advanced Resistive Hilt 43
  - Crafted by Artifice
• 
  Advanced Versatile Hilt 43
  - Crafted by Artifice
• 
  Advanced Lethal Mod 43
  - Crafted by Cybertech
• 
  Advanced Warding Mod 43
  - Crafted by Cybertech
• 
  Advanced Adept Enhancement 43
  - Crafted by Cybertech
• Augments, Earpieces, and all of Biochem seem to be a Work in Progress.

Prefixes

• There's a lot of changes here, and I need some more time to make sense of it.

Crafting Recipe Archive

Most equipable, non-moddable schematics have been deprecated and moved to an Archive category in the crafting window. New Prototype-quality, Adaptive Armor schematics have been added in their place. These items can be Reverse-engineered once to a random prefixed Artifact-quality version.

Example:

Defiant Onslaught Jacket MK-16

Difficulty:

500 515 530 545

Components:

12x

Exotic Isotope Stabilizer

8x

Trimantium

12x

Farium Armor Assembly Component

Defiant Onslaught Jacket MK-16

Binds on Equip

Chest

Adaptive Armor (Rating 208)

Durability: 120/120

Total Stats:

+331 Endurance

+154 Power

+137 Critical Rating

+282 Mastery

Item Modifications:

Dye Module: Open

Augment: Open

Requires Level 64

Requires Adaptive Armor

Requires Armormech (500)