The more technical patchnotes of the stuff added since the Halloween Event.
You can also find these in your game in the main menu, you can see for yourself by category and version number. This is more of just a dump for overall viewing.
v2.2.28 [Add] : Added a slider for the one turn to control the flight path
v2.2.28 [Fix] : Code for rotating turrets and spin blocks tided up. Slow moving spinners now actually rotate correctly [BUGS-376]
v2.2.28 [Fix] : Failsafes can now optionally check for friendly vehicles
v2.2.28 [Fix] : Failsafes can switch targets when a friendly is in the way instead of holding fire
v2.2.28 [Fix] : Failsafes won't use chached values that are older that 1 second
v2.2.28 [Fix] : Fixed failsafes not working correctly for missiles
v2.2.28 [Fix] : Improved performance of existing failsafe functionality
v2.2.28 [Fix] : Switched to the new UI
v2.2.28 [Fix] : Mimic is synced over network [FTD-251]
v2.2.28 [Fix] : Fix to non PRB rendering of tiled structural components
v2.2.28 [Fix] : Fixed an issue with laser designated missiles (not) using other lasers on the vehicle
v2.2.28 [Fix] : Fixed various bugs in the new lua functions [BUGS-384]
v2.2.28 [Fix] : Missiles resetting to default now fixed
v2.2.28 [Fix] : Readded the 'Allow fire when partially charged' button to the railgun UI [BUGS-383]
v2.3 [Add] : Propeller shaft: new type of shaft, used after a reduction gear and allowing to connect a propeller to the steam engine
v2.3 [Add] : Reduction gear: can be connected to any shaft block or propeller shaft block. It manages the transition between the steam engine and the propeller rotation speeds, the more you add, the more responsive the propeller is
v2.3 [Add] : Sealed propeller shaft: it is a 2m long propeller shaft which allow you to place any other block in the second part, allowing you to seal your ship while letting the propeller shaft going through
v2.3 [Add] : Shaft bearing block: increase the max safe rotation speed of the assembly
v2.3 [Add] : Shaft shift-axis: allow to shift the axis of the shaft by one meter (must be connected to a standard shaft block, not a crank or even a propeller shaft)
v2.3 [Add] : Steam-propellers: specific propellers which must be attached to a shaft propeller. It cannot rotate faster than the rotation speed of the main shaft, and its speed is reduced if the steam engine do not provide enough energy
v2.3 [Add] : When you move or resize a UI element (of the new UI system), those changes are saved (for a resolution and font size)
v2.3 [Add] : You can swap tabs in the new UI system by pressing [ and ]. They keys are remappable
v2.3 [Change] : Overhaul of the way the rotating blocks takes damage, any rotating block can now be damaged (not only the pistons)
v2.3 [Change] : The gears maximum safe rotation speed will now decrease when rotating components are added to it. Using cased cranks is better, shaft bearing blocks even increase the max safe rotation speed of the assembly
v2.3 [Fix] : Ejectors are now properly attached to the large gantry and don't glow red showing an apparent 'disconnection'
v2.3 [Fix] : Gantries need to have the same forward direction as launch pads in order to connect. Fixes some issues with large rail missiles
v2.3 [Add] : Added high arc options to CRAM cannons as well
v2.3 [Add] : 2 parameters: start delay and fuel budget(in % of total fuel on missile)
v2.3 [Add] : New component: turning thruster. Gives 2.5x as much turning force as a fin in the same position, not affected by air density, uses fuel.
v2.3 [Add] : Only engages when the angle to the target is above 10°, has a 5° inaccuracy
v2.3 [Add] : Uses up 1 fuel tank in 5 seconds
v2.3 [Add] : Steam-propellers: specific propellers which must be attached to a shaft propeller. It cannot rotate faster than the rotation speed of the main shaft, and its speed is reduced if the steam engine do not provide enough energy
v2.3 [Change] : New target type options: missile only, cannon shell only or everything
v2.3 [Change] : Explosion force against missiles reduced even more, 50% of the previous value(only the pushing force, damage dissipation comes later)
v2.3 [Change] : M interceptor base damage up from 800 to 1000
v2.3 [Change] : Regulators give 100% of the base lifetime instead of 50%
v2.3 [Change] : S missiles take more damage from interceptors(80-100 from a small one)
v2.3 [Change] : Turnrate now isn't reduced below 100 m/s
v2.3 [Change] : 3 firing modes adjustable on the controller: Continuous, Salvo, Full salvo
v2.3 [Change] : Continuous: is the current behavior, fire 1 missile on a trigger pull. Fire all at once if stagger is 0.
v2.3 [Change] : Full salvo: same as salvo, but won't start firing until all launchpads not missing a gantry are fully loaded.
v2.3 [Change] : Salvo: fire every missile of every launcher once on a trigger pull. Also stops if it can't fire missiles in a stagger step. Fire all at once if stagger is 0.
v2.3 [Change] : Part of the propeller shaft weight is now added to the total assembly weight, depending on the command sent to the propeller (0: no weight added, 1: full weight added)
v2.3 [Change] : The blocks descriptions better describe how they are connected to each other (an update of the steam build help will be done at some point)
v2.3 [Change] : The friction coefficient applied to the main assembly is now only based on the number of reduction gears
v2.3 [Change] : The medium propeller of the small gearbox has been removed
v2.3 [Change] : The propeller shaft blocks are now a lot more durable and should resist against most explosions
v2.3 [Change] : The propeller shaft can now rotate faster than the engine shaft, by x1.5 per reduction gear
v2.3 [Change] : The propeller shaft texutre is now different from the engine shaft texture to help differentiate them
v2.3 [Change] : The propellers are less heavy
v2.3 [Change] : The propellers now consume some (very few) of the energy generated by the steam engine
v2.3 [Change] : The tooltip indicating the state of the steam engine now display more information and is a lot more readable
v2.3 [Change] : There is now a mirrored version of the large reduction gear
v2.3 [Change] : Transition to the shaft added to the propeller models
v2.3 [Change] : All fragmentation warheads now create an actual cone of fragments instead of a square-base pyramid
v2.3 [Change] : Fragments are now evenly distributed (on average) instead of concentrated at certain directions
v2.3 [Fix] : Fixed bug in interceptors that causes it to destroy all enemy missiles
v2.3 [Fix] : Fixed turrets with missiles using the wrong information for aiming
v2.3 [Fix] : Missiles are no longer assumed to inherit the velocity of the parent vehicle for aiming
v2.3 [Fix] : Torpedoes no longer consider gravity for aiming
v2.3 [Fix] : Torpedoes now use the correct speed when aiming
v2.3 [Fix] : The 1m propeller is now working as intended
v2.3 [Fix] : The small sealed propeller shaft now works as intended
v2.3 [Add] : Updated the UI to the new format
v2.3 [Add] : Non PRB shaders now use triplanar mapping for structural components, like the PBR shaders do
v2.3 [Fix] : The propeller shaft weight is now initialized correctly, so the shaft won't lose rotation speed each time a steam block is added anywhere
v2.3 [Change] : All fragmentation warheads now create an actual cone of fragments instead of a square-base pyramid
v2.3 [Change] : Casket bolt updated with mimics and updated haproons.
v2.3 [Change] : Davy Jones Outpost beaming redone.
v2.3 [Change] : Hoplite given a tuneup.
v2.3 [Change] : Nessie spotted once again but with some minor changes.
v2.3 [Change] : Sea Adder now paddle powered.
v2.3 [Change] : Shrike given more booms.
v2.3 [Change] : Scuttlegun replaced with fully paddle powered varient.
v2.3 [Change] : Shuriken given a shiny new gun.
v2.3 [Change] : Water Buffalo now fully paddle operated.
v2.3 [Change] : Conveictor given some touch up and mimics.
v2.3 [Change] : Dragonfly touched up.(edited)
v2.3 [Change] : Latobius given mimics and tune up.
v2.3 [Change] : Noir had mimic touch up.
v2.3 [Change] : Osprey touched up.
v2.3 [Change] : Songbird touched up.
v2.3 [Change] : Valkyria given functional harpoons again.
v2.3 [Change] : Cerberus had some missile changes.
v2.3 [Change] : Lamprey new railings and has been buffed.
v2.3 [Change] : Hunter given functional harpoons and extra tune up.
v2.3 [Change] : Razormaul touched up the missiles and has been given a shave.
v2.3 [Change] : Cutlass updated to new missiles.
v2.3 [Change] : Gnat updated.
v2.3 [Change] : Raft updated.
v2.3 [Change] : Rapier adjusted missiles.
v2.3 [Change] : Sentinel updated.
v2.3 [Change] : Starting rib changed missile gantries.
v2.3 [Change] : Wanderlusts updated.
v2.3 [Change] : Defiance Updated.
v2.3 [Change] : Iron Maiden replaced with a more up to date look.
v2.3 [Change] : Falcon has been completely overhauled.
v2.3 [Change] : Gannet replaced with a new body.
v2.3 [Change] : Banshee updated.
v2.3 [Change] : Lynx has a new shiny replacement.
v2.3 [Change] : Retribution has been completely overhauled.
v2.3 [Change] : Dragonclaw missiles swapped out.(edited)
v2.3.1 [Add] : The night is dark and full of terrors. Darkness encrouches upon FTD.
v2.3.1 [Change] : Grav. compensators now increase effective time by 100% of base
v2.3.1 [Change] : Increased cram projectile lifetime from 20s to 40s
v2.3.1 [Change] : Airship Gantry Atlas given a tuneup.
v2.3.1 [Change] : Atlas given a tuneup.
v2.3.1 [Change] : Costal Defense given a tuneup.
v2.3.1 [Change] : Monkey Barrel given a cleanup.
v2.3.1 [Change] : Sea Viper now much more aggressive.
v2.3.1 [Change] : Atlas retrofit given a tuneup.
v2.3.1 [Change] : Duster now has a secret weapon.
v2.3.1 [Change] : Iron Maiden drop a new album....I mean new Lore!
v2.3.1 [Change] : Retribution replacement finally overcome its stage fright.
v2.3.1 [Change] : Credits updated
v2.3.1 [Fix] : Projectile tooltip now shows secondary head charge stats when following the shell [BUGS-372]
v2.3.1 [Fix] : Autocannon now works (after repair) if killed whilst firing [BUGS-392]
v2.3.1 [Fix] : Temporary fix to [BUGS-421] that was causing fast ships with the new modular big rudders to fly into space
v2.3.1 [Fix] : Mouse 3 and 4 can now be mapped to most things
v2.3.1 [Fix] : Missiles no longer explode underneath the target's armour [BUGS-418]
v2.3.1 [Fix] : Propellers in reverse now consume power instead of creating some [BUGS-417]
v2.3.1 [Add] : The Forces of Winter in the North begin to show signs of movement! Rambots its time to take up arms and fulfil our Oath and fend off this Invasion!
v2.3.1 [Change] : DWG missiles updated for the entire faction to new specification for the new missiles.
v2.3.1 [Remove] : Attack on Rambot sucessfully defended, the forces of night retreat... for now.
v2.3.1 [Add] : Alloy and Metal armoured hatches added to decoration. Just like the bulkhead doors, they should add style without too much structural sacrifice.
v2.3.1 [Add] : Alloy and Metal bulkhead doors added to decoration. They should add style and not hinder your craft now.
v2.3.1 [Add] : Alloy Wedge Slopes added in 1m, 2m, 3m, 4m. In both front and back configuration.
v2.3.1 [Add] : Big and small chains added to decoration. You can now have proper chains for your ship anchors or... other things ( ͡° ͜ʖ ͡°).
v2.3.1 [Add] : Coal has been added to the game in the form of new styled resource containers. 8 cost for Coal Pile, 24 cost for Coal Pile Large.
v2.3.1 [Add] : Metal Wdge Slopes added in 1m, 2m, 3m, 4m. In both front and back configuration.
v2.3.1 [Add] : Reinforced Wood added in 1m, 2m, 3m, 4m variants. You can find them in them in the Blocks tab. Have nice reinforced Ship decks now.
v2.3.1 [Add] : Two new stairs for the more basic steel look in Regular and Stacked.
v2.3.1 [Change] : Mimics increased by 0.5 Material Cost. Ask Rhea Tongue
v2.3.1 [Change] : Portholes fixed of purple issue.
Forum Post Link to the patchnotes.
https://forum.fromthedepthsgame.com/showthread.php?tid=38506