Almost all civics have had changes. Those civics that provide special effects will retain these effects, and they won't have been edited. Only static modifiers have been added to the civics.

*The newer civics added since Necroids have not yet been changed, but there are plans to in an update.*

DEFAULT CIVICS

Agrarian Idyll
All special effects
Pop growth speed: +10%

Anglers
No changes

Aristocratic Elite
All special effects
Governor level cap: +2
Ruler happiness: +15%

Barbaric Despoilers
No changes

Beacon of Liberty
Monthly unity: +20%
Empire sprawl from pops: -15%

Byzantine Bureaucracy
No changes

Catalytic Processing
No changes

Citizen Service
All special effects
Naval cap: +15%
Army build speed: +15%
Unity from Soldiers: +2

Corporate Dominion
No changes

Corvée System
No changes

Cutthroat Politics
Edict cost: -20%
Edict duration: +20%
Decryption: +1

Death Cult
No changes

Diplomatic Corps
Envoys: +2
Diplomatic Weight: +15%
Diplomatic deal upkeep: -10%

Distinguished Admiralty
Ship fire rate: +10%
Ship experience gain: +15%
Admiral level cap: +1
Fleet command limit: +10

Efficient Bureaucracy
Administrator upkeep: -20%
Empire sprawl from systems: -20%
Empire sprawl from planets: -20%

Environmentalist
Pop consumer goods upkeep: -20%
Habitability: +10%

Exalted Priesthood
All special effects
Amenities: +15%
Unity from Priests: +1

Fanatic Purifiers
No changes

Feudal Society
All special effects
Subject power relations penalty: -50%
Subject tax: +25%
Leader cost: -25%

Free Haven
Pop growth from immigration: +20%
Immigration pull: +50%
Happiness: +10%

Functional Architecture
Building and district cost: -15%
Building and district upkeep: -10%
Construction time: -5%
Building slots: +1

Idealistic Foundation
Citizen happiness: +10%
Amenities: +20%
Crime: -20%

Idyllic Bloom
No changes

Imperial Cult
Edicts fund: +100
Monthly influence: +0.5

Inward Perfection
No changes

Masterful Crafters
No changes

Memorialists
No changes

Merchant Guilds
All special effects
Market fee: -10%
Trade value: +5%

Meritocracy
Leader level cap: +2
Specialists resource output: +15%
Leader experience gain: +15%

Mining Guilds
Minerals from miners: +1
Mining district build speed: +25%
Max mining districts: +2

Nationalistic Zeal
War exhaustion gain: -15%
Claim influence cost: -15%
Max rivalries: +2

Parliamentary System
Faction influence gain: +30%
Governing ethics attraction: +20%

Philosopher King
All special effects
Ruler level cap: +2
Leader experience gain: +15%

Pleasure Seekers
No changes

Police State
All special effects
Stability: +5
Crime: -20

Pompous Purists
No changes

Reanimators
No changes

Shadow Council
Election cost: -75%
Resources from Rulers: +10%
Faction approval: +5%
Decryption: +1

Shared Burdens
No changes

Slaver Guilds
Slaves resource output: +15%
Rulers political power: +50%
Enslaved pop ratio: 40%

Technocracy
No changes

Warrior Culture
All special effects
Army damage: +20%
Ship fire rate: +10%

HIVE CIVICS

Ascetic
Habitability: +10%
Pop amenities usage: -25%

Devouring Swarm
No changes

Divided Attention
Empire sprawl from colonies: -50%
Naval capacity: +15%

Empath
Envoys: +2
Diplomatic weight: +20%
Diplomatic deal upkeep: -10%

Natural Neural Network
All special effects
Research alternatives: +1
Research speed: +5%

One Mind
All special effects
Monthly unity: +15%
Monthly influence: +0.5

Pooled Knowledge
Leader level cap: +1
Leader experience gain: +20%
Encryption: +2

Strength of Legions
Army starting experience: +100
Army damage: +20%
Army recruitment speed: +25%
Army upkeep: -20%

Subspace Ephapse
Naval cap: +15%
Evasion: +10%
Ship speed: +10%

Subsumed Will
Empire sprawl from pops: -20%
Edicts fund: +50
Monthly influence: +25%

Terravore
No changes

Hive civics not mentioned here have not had any changes yet.

MACHINE CIVICS

Constructobot
Building and district cost: -15%
Building and district upkeep: -15%
Construction time: -10%
Building slots: +1

Delegated Functions
Leader upkeep: -25%
Leader pool size: +2
Leader experience gain: +15%
Envoys: +1

Factory Overclocking
Leader level cap: +1
Leader experience gain: +15%
Research speed: +5%

Introspective
Engineering research speed: +10%
Monthly engineering research: +10%
Encryption: +1

Maintenance Protocols
All special effects
Resources from jobs: +10%
Robot upkeep: -15%

OTA Updates
Empire sprawl from pops: -25%
Pop housing usage: -20%
Edicts fund: +50

Rapid Replicator
Pop assembly speed: +25%
Housing: +30%

Rockbreakers
Minerals from miners: +1
Mining district build speed: +25%
Max mining districts: +2

Static Research Analysis
Research alternatives: +2
Research speed: +10%
Decryption: +1

Unitary Cohesion
Monthly unity: +20%
Country base production: +10%

Warbots
Army damage: +25%
Army upkeep: -20%
Army recruitment time: -50%

Zero-Waste Protocols
Robot upkeep: -25%
Pop assembly speed reduction: -20%

Machine civics not mentioned here have not had any changes yet.

CORPORATE CIVICS

Brand Loyalty
Monthly unity: +20%
Edicts fund: +50
Encryption: +1

Franchising
Subject power relations penalty: -33%
Empire sprawl from branch offices: -25%
Branch office cost: -15%

Free Traders
Trade value: +10%
Branch office value: +15%
Monthly influence: +15%

Media Conglomerate
War exhaustion gain: -15%
Monthly unity: +15%
Happiness: +5%

Private Prospectors
All special effects
Empire sprawl from systems: -33%
Empire sprawl from planets: -33%

Public Relations Specialists
Envoys: +2
Diplomatic weight: +20%
Diplomatic deal upkeep: -10%

Ruthless Competition
Leader level cap: +1
Leader experience gain: +15%
Country base production: +5%
Decryption: +1

Trading Posts
Starbase cap: +4
Trade value: +15%

Gospel of the Masses
No changes

Indentured Assets
Rulers political power: +30%
Slaves resource output: +15%
Enslaved pop ratio: 40%

Naval Contractors
Naval cap: +20%
Ship upkeep: -10%

Private Military Companies
Army starting experience: +100
Army damage: +20%
Army upkeep: -25%
Army build time: -25%