Dec 13
Faction Play Phase 4 link
"We've chosen to call this update Faction Play Phase 4.1, both to signal the start of a new development phase and to stress that this is only the first of future updates and improvements planned for Faction Play as we renew its focus in 2017."
Dec 14 link
Inner Sphere Invasion DropDeck tonnage limit has been increased from 250 tonnes to 265
Dec 15
Clan Invasion DropDeck tonnage limit reduced to 240 tons. link
Dec 15
Hotfix link
Leaderboards: Faction Play and Quick Play Leaderboard placements now require a minimum of 10 matches played in the associated mode.
Faction Play: Invasion and Scouting pre-drop screens will now convey which side you are fighting on
Faction Play: The Planet History table will now use standard timestamps (ie. the year 2016, not 3051
Resetting Faction Play Leaderboards to coincide with Phase 4.1 release.
Increasing the Skirmish, Assault, Conquest, and Domination Faction Play Game Mode timers to 25 minutes (from 15).
Dec 20
Hotfix link
Clan scouting dropped to 50 tons
The total amount of Intel in the Scouting Tug of War bar has been reduced to 200 (from 300).
The allotment of the five Invasion Stages along the Invasion Tug of War bar has been adjusted.
• All Invasion Stages are now evenly distributed along the Tug of War. As a result, a larger portion of battles throughout a Conflict will now take place in the four initial Invasion Stages.
Jan 24 patch notes link
Faction Play: Clan emblem and IS emblem banners have been added to Invasion gates.
Faction Play: Fixed an issue where the First Victory XP Bonus would be removed from all 'Mechs in the Drop Deck even if they hadn't been used in that match.
Jan 28 ROUNDTABLE
https://youtu.be/Zo-NNvo7Ftk
Reddit notes
Feb 21 patch notes link
To prevent confusion between the Invasion Game Mode and the Invasion Conflict type, the Invasion Game Mode - wherein players defend or attack the Orbital Defense Cannon - is now called Siege.
Mercenary Contract Auto-Renewal
Too many
Mar 21 patch notes link
• Faction Play (Siege): Fixed an issue where destroying the second O-Gen as a Clan pilot would play the IS dialogue instead.
• Faction Play: Cleaned up the black border around the Faction Stats button in the End of Round screen.
April 18 patch notes link
Faction Play (Mercenary Career): Fixed a loophole whereby Mercenary Pilots could bypass intended Contract restrictions by hopping between sub-Units operated by the same over-arching Unit population or command structure, yet contracted to different Factions. For example, Unit ABC is Contracted to Liao, but operates sub-Units ABC1, ABC2, and ABC3, all of which are Contracted to different Factions. We are making these changes to address active 'gaming' of the Contract system.
May 5th-14th
BATTLE OF TUKAYYID 3 link
May 16 patch notes link
...
TL/DR only substantial changes to faction warfare in the last ~6 months was nerfing the clan dropdeck tonnage
Edit: added missing I.S. tonnage buff 12/14
Added missing changes in 12/20 hotfix
Edited by FallingAce, 18 June 2017 - 12:27 AM.