- Change costs of most ESC techs. On average, it should now take twice as long to research all ESC techs available to your empire.
- AI now has +50% research speed bonus starting with the midgame year and +100% research speed bonus starting with the endgame year.
- Add menu option to toggle AI boost (default ON)
- Remove rare resource cost and upkeep from Central Research Bureau, Culture Nexus, Advanced Materials Laboratory and Technology Institute for AI.
- Fix AI weights for Central Research Bureau, Culture Nexus, Advanced Materials Laboratory and Technology Institute.
- Change AI weights for Zro Distillery and Dark Matter Drawing Facility.
- Add advanced jump drives.
- Add FE-unique reverse-engineerable jump drive.
- Add intermediate tier of psionic shields.
- Add reactors for new NSC Headquarters station.
- Reinforced Crystalline Planting now requires tier 6 armor instead of tier 7 armor.
- Add events to remove duplicates of empire-unique buildings acquired through conquest or vassal integration.
- Add menu option to toggle ESC Unbidden (default ON if crises enabled)
- Buff production of ESC special resources by FE buildings.
- Make ESC Unbidden invasion a bit more likely to trigger on yearly die roll.
- By popular demand, added localization of country flags used to limit queueing of empire-unique buildings.

- Add support for "Forgotten Queens" mod, giving hiveminds ability to research psionic weapons under some conditions without relying on reverse-engineering.
- Changed Watcher of Eternity:
--- Remove +1 research alternative since there is no real need for it this late into the game.
--- Change +20% science from researchers into +20% science from ALL sources on the planet.
- Give Cerebral Node and Network Regulator custom unity-generating jobs to stop these buildings from providing unintentional administrative capacity.

- Add support for Realistic Ships Lithoid dreadnought.
- Add support for Stellar Bastion from "!Expanded Starbases"
- Add support for "A Deadly Tempest" nanite ships.
- Change repair drones aux component to provide percentage-based regeneration of hull and armor.

- Remove references to no-longer-existing NSC ship class 'supportship'.
- Psionic Avatar Summoning 'edict' now has a fixed cost 2500 energy and 250 psionic charges.
- Updated test event with Juggernaut weapons' techs.
- Balance changes to some of the weapons based on their weighted average damage (thus, accounting for damage and defense penetration modifiers).

- ESC rare technologies now have increased drop weight if player has "Technological Ascendancy" ascension perk.
- Siegebreaker strikecrafts are now reverse-engineerable.
- Mercenary strikecrafts are no longer reverse-engineerable to keep as unique to Megacorp empires.
- Buffed starbase reactors.

- ESC rare technologies now have increased drop weight if player has "Technological Ascendancy" ascension perk or federation perk boosting rare tech weights.
- Siegebreaker strikecrafts are now reverse-engineerable.
- Mercenary strikecrafts are no longer reverse-engineerable to keep as unique to Megacorp empires.
- Buffed starbase reactors.

- Fix an oversight that allowed tier 6 armor to be researchable before tier 5 armor.

- Fixed Juggernaut weapons being unavailable to those who have Federations but NOT Apocalypse DLC.

- Update target game version to 2.6.*
- Add advanced reactors for Juggernaut.
- Add advanced thrusters for Juggernaut.
- Update strikecrafts.
- Add economic plans so that AI can build towards ESC resources.
- Fix missing thrusters for private colony ship, add advanced thrusters for lithoid colonizer.
- Fix missing reactors for private colony ship, add advanced thrusters for lithoid colonizer.
- Human players now need to research a special project in order to get a tech option for the Automated Dreadnought Combat Computers.
- Add carrier Automated Dreadnought Combat Computer for cruisers, battleships and titans.
- Add Automated Dreadnought Combat Computers for Juggernaut (artillery and carrier behavior).
- Add Juggernaut-specific X-slot weapons.
- Add Juggernaut-specific M-slot weapons.
- Switch Carrier computer over to vanilla Carrier behavior. Update icon for Carrier Automated Dreadnought Combat Computer.
- Update icons for Nanite Cannon.
- Update icons for several T-slot weapon technologies.
- Fix Reality Eraser being called Matter Annihilator.
- Fix advanced Energy Launchers being tagged as anti_shield when they are in fact anti_armor.

This update is backwards compatible with 2.5.*