Knights Templar and 
House of Lancaster civilizations aren't fully updated and miss stats, abilities and upgrades.Explorer will continue to be updated over the next few weeks for both old and new civs.
Abilities and influences
Defense Arrow
Fires a Signal Arrow that increases the armor of nearby units (including the Khan) by +2 for 5 seconds. When in 8.75 tiles range of
Attack Speed Arrow
Fires a Signal Arrow that increases the attack speed of nearby ranged units (including the Khan) by +50% for 5 seconds. When in 8.75 tiles range of
Maneuver Arrow
Fire a Signal Arrow that increases the movement speed of nearby units (including the Khan) by +33% for 5 seconds. Does not affect Villagers. When in 8.75 tiles range of
Yam
Cavalry and Traders near an Outpost get +15% speed for 10 seconds. When in 12.5 tiles range of
Yam Network (Improved)
Yam speed aura applies to all units instead of just Traders and cavalry units. Does not apply to siege engines. When in 12.5 tiles range of
Produced at
Patch History
Khaganate Palace can now randomly spawn 4 Elite Mangudais
Technology Upgrades
Angled Surfaces
Age IVRanged Armor Technology 3/3
Increase the ranged armor of all non-siege units by +1.
Balanced Projectiles
Age IIIRanged Damage Technology 2/3
Increase the ranged damage of all arrows and bolts by +1.
Biology
Age IVCavalry Technology
Investing in natural sciences increases the health of all cavalry by +25%.
Fitted Leatherwork
Age IIMelee Armor Technology 1/3
Increase the melee armor of all non-siege units by +1.
Insulated Helm
Age IIIMelee Armor Technology 2/3
Increase the melee armor of all non-siege units by +1.
Iron Undermesh
Age IIRanged Armor Technology 1/3
Increase the ranged armor of all non-siege units by +1.
Master Smiths
Age IVMelee Armor Technology 3/3
Increase the melee armor of all non-siege units by +1.
Military Academy
Age IIIProduction Technology
Increase the production speed of infantry, cavalry, siege, and transport units at buildings by 33%. Does not affect religious units or other support units.
Platecutter Point
Age IVRanged Damage Technology 3/3
Increase the ranged damage of all arrows and bolts by +1.
Steeled Arrow
Age IIRanged Damage Technology 1/3
Increase the ranged damage of all arrows and bolts by +1.
Wedge Rivets
Age IIIRanged Armor Technology 2/3
Increase the ranged armor of all non-siege units by +1.
Biology (Improved)
Age IVCavalry Technology
Investing in natural sciences increases the health of all cavalry by +35%. If Biology has already been researched, increase it by +10% instead.
Military Academy (Improved)
Age IIIProduction Technology
Increase the production speed of military and transport units at buildings by 53%. Does not affect religious or other support units. If Military Academy has already been researched, increase production speed by 20% instead.
Raid Bounty
Age IIRaiding Technology
Increase the raid income for igniting a building to +50 Food and Gold.
Raid Bounty (Improved)
Age IIRaiding Technology
Increase the raid income for igniting a building to +75 Food and Gold. If Raid Bounty has already been researched, increase the raid income for igniting a building by +25 Food and Gold.
Stone Bounty
Age IVRaiding Technology
Add +50 Stone to the raid income for igniting a building.
Stone Bounty (Improved)
Age IVRaiding Technology
Add +75 Stone to the raid income for igniting a building. If Stone Bounty has already been researched, add +25 Stone to the raid income for igniting a building.