Season Ten: The Iconian War

 was released on April 21, 2015. It featured the beginning of the Iconian War story arc, the Heralds as new enemy faction, the Iconian Resistance as new Reputation System, as well as a complete revamp of the Galaxy Map, removing all previous Sector Blocks and replacing them with Quadrants, including the addition of previously absent Star Systems, and a rearrangement of the existing ones.

Systems

 * New Reputation System
 * Iconian Resistance (aka Iconian Reputation) with new rewards/currencies:
 * Iconian Marks
 * 9 new Reputation Traits, unlocked at Tier 1–5
 * 9 new Reputation Traits, unlocked at Tier 1–5

Locations and missions

 * Feature Episode (Pre-Season 10 Event)
 * , intruducing the Iconian War arc
 * Iconian PvE Queue missions (Normal/Advanced/Elite)
 * (Ground)
 * (Space)
 * (Space)
 * Feature Episodes
 * , added May 28
 * , added June 18
 * , added May 28
 * , added June 18

Accolades

 * Kill Accolades - Heralds
 * Accolades from mission: Blood of Ancients
 * Accolades from mission: Delta Flight
 * Accolades from PvE mission: The Herald Sphere

Items

 * New
 * Iconian Resistance Reputation Items
 * Iconian Resistance Elite (Ground Set)
 * Iconian Resistance Personal Shield Mk XII (Tier 1)
 * Iconian Resistance Pulsewave Assault Mk XII (Tier 3)
 * Iconian Resistance Armor Mk XII (Tier 5)
 * Iconian Resistance Starship Technologies (Space Set)
 * Iconian Resistance Deflector Array Mk XII (Tier 2)
 * Iconian Resistance Combat Impulse Engines Mk XII (Tier 3)
 * Iconian Resistance Hyper Injection Warp Core Mk XII (Tier 4)
 * Iconian Resistance Hyper Injection Singularity Core Mk XII (Tier 4)
 * Iconian Resistance Resilient Shield Array Mk XII (Tier 5)
 * Radiant Armaments (Space Set)
 * Console - Universal - Sustained Radiant Field (Tier 1)
 * Advanced Radiant Quantum Launcher Mk XII (Tier 2)
 * Advanced Radiant Antiproton Dual Heavy Cannons Mk XII (Tier 4)
 * Advanced Radiant Antiproton Beam Array Mk XII (Tier 4)
 * Kit Modules
 * Security Kit Module - Photonic Overcharge Mk XII
 * Research Kit Module - Photonic Overload Mk XII
 * Fabrication Kit Module - Photonic Barrier Generator Mk XII
 * Iconian Resistance Reputation Stores
 * Ground Weapons Mk XII (Tier 1 & 2)
 * Space Weapons Mk XII (Tier 3 & 4)

Ships

 * Xindi-Terrestrial Lock Box
 * Malon Battlecruiser (T5)
 * Xindi-Insectoid Olaen-class Heavy Strike Wing Escort (T6)
 * Lobi Crystal Consortium
 * Xindi-Primate Ateleth-class Dreadnought Cruiser (T6)

Season 10.5
Mid-season update released July 16, 2015, focusing on Fleet systems, continuing the Iconian War story arc and introducing the.

Systems

 * New Fleet Systems
 * Fleet Holding: Fleet Research Lab (Tier 1–3)
 * Daily Duty Officer Assignment
 * Daily R&D Research Mission
 * Weekly Fleet-Wide Buff Project
 * Trait & R&D Project Slot Store
 * Krenim Researcher Uniform
 * Krenim Researcher Duty Officers
 * Krenim Bridge Officer Candidates
 * Fleet Profession-Specific Kit Modules Mk XII, Mk XIII
 * Fleet Versatile Kit Frames Mk XII, Mk XIII
 * Fleet Strategic Secondary Deflectors Mk XII
 * Fleet Particle Focuser Science Consoles Mk XII
 * Fleet Armada System

Locations and missions

 * Feature Episode
 * , added July 16th
 * , added August 13th
 * , added September 10th

Ships

 * Cross Faction Dreadnought Bundle [October 8th]
 * Yamato-class Dreadnought Cruiser (T6)
 * Fleet Galaxy-class Dreadnought Cruiser (T6)
 * Kolasi-class Siege Destroyer (T6)
 * Fleet Guramba-class Siege Destroyer (T6)
 * Kara-class Advanced Warbird (T6)
 * Fleet Ha'apax-class Advanced Warbird (T6)
 * Cross Faction Heavy Strike Wing Escort Bundle [July 30th]
 * Alita-class Heavy Strike Wing Escort (T6)
 * Fleet Akira-class Heavy Strike Wing Escort (T6)
 * Qa'Tel-class Flight Deck Raptor (T6)
 * Fleet Qin-class Flight Deck Raptor (T6)
 * Jhu'ael-class Tactical Carrier Warbird (T6)
 * Fleet Ar'kif-class Tactical Carrier Warbird (T6)
 * Lifetime Subscription
 * Manticore Heavy Destroyer (T6)
 * Fleet Manticore Heavy Destroyer (T6)
 * Duvqu' Heavy Destroyer (T6)
 * Fleet Duvqu' Heavy Destroyer (T6)
 * Dinaes Warbird Destroyer (T6)
 * Fleet Dinaes Warbird Destroyer (T6)
 * Lobi Crystal Consortium
 * Zahl Heavy Cruiser (T6)
 * Year of Hell Lock Box
 * Krenim Imperium-class Warship (T6)
 * Nihydron Destroyer (T5)
 * Zen Store
 * Resolute-class Advanced Heavy Cruiser (T6)
 * Fleet Excelsior-class Advanced Heavy Cruiser (T6)
 * Hestia-class Advanced Escort (T6) [September 24th]
 * Fleet Hephaestus-class Advanced Escort (T6)