Ok here is all the meaningful info if anyone bothers
GAME MODES
Conquest
Team deathmatch
Domination
Grand operations. (more on that further down).
FORTIFICATIONS
A massive gamechanger. These are essentially fortifications/cover that you can build in game to assist you and your team. Any class can build the following:
Barbed wire
Trenches
Sandbags
Fox holes
Tank stoppers
Ladders
Rebuild parts of houses and add onto them
However the support class has a little extra. Not only can it build everything faster it can also build offensive/defensive options such as:
Machine gun nests
Field cannons
HEALTH AND AMMO
You no longer regen to 100 health. Health Regen now goes in stages. For example, if the health bar is split into 4 that'll be 25 health per stage. If you get shot to 1 health you'll only regen to 25 health and so on. This encourages teamplay and careful decision making. Go into a fight, lose health, only regen to half your health, what will your next decision be? Seek health? You don't have much ammo if you encounter an enemy player on the way. Maybe build cover and a depot to get health and ammo from? Who knows?
There will be an animation for EVERYTHING. No more magically getting health or ammo by standing next to a box. You physically reach into the box and grab and pouch, or a medic will throw you one. You can grab health from a depot too, this means you don't have to rely on medics as much to provide health, same with the support class, there are now more options.
You now spawn with less ammo than ever before, this means you can no longer spawn, run straight into a fight thinking you're invincible, die, and respwan quickly again, you'll have to think carefully upon spawning. However, ammo can be looted from dead bodies.
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REVIVE SYSTEM
This has completely changed. You now have a full on revive animation that takes a few seconds to complete.
Ragdoll bodies are now server side too, that means you can now DRAG your allies body behind cover that you may have just built in order to do the revive animation in safety. In addition to this because they are server side, if you kill someone in the water, their body will fall down and make a loud splashing noise for everyone around to hear, same if you kill them on a hill, the body will actually roll down and flatten the grass on the way.
ANY CLASS can now revive but only your squad mates. However, the medic class can revive anyone on your team. The medic class will also revive quicker than other classes, similar to how the support class can build fortifications quicker.
Revives no longer instantly bring you back to 100 HP unless done by a medic. Think of the revive system from rainbow six siege, you go down, you can look around 360 degrees to see if there is a squad mate or medic nearby, you can then raise your hand up and scream for a revive. On the other hand if you're alone because you flanked for example, you can force a bleed out so you don't have to wait to die.
GUNPLAY
They are trying to raise the skill cap even more as players did complain battlefield 1 was a bit too casual for a large portion of the battlefield community. Every gun now has their own individual recoil so you can learn certain weapons and master them. Large calibre weapons can now shoot through walls, you can literally spray down a wooden building with an LMG and you might just kill someone.
MOVEMENT SYSTEM
You can now dive sideways and backwards, not only forward. You can crawl in any direction and carry on shooting as long as your gun is facing toward. This gives you a ton of new options for badass battlefield moments.
You can now crouch sprint
Ledge grabbing is now a thing. It is said to require precise timing to pull off so it further raises the skill cap within the game.
Dolphin diving will be kept in check so it's not abused.
You now jump right through glass windows! No more chopping up a window while a tank shoots the crap out of you. this keeps the flow of the game going and the adrenaline pumping, same with doors, a returning feature from battlefield 1 that allows you to run into door and slam them open.
World interaction has improved massively, how you interact with the world and how it interacts with you. You will push grass out the way, lift your ams and wade in water, you will physically slam into walls if you sprint into them.
YOU CAN TOW
You can tow literally all kinds of turrets. You can tow anti air turrets, field cannons, and probably more. Any heavy vehicle will be able to tow. You will be able to actually use said turrets even while they're being towed!
You could tow a field cannon to the top of a hill, a strategic location, and then build fortifications around. You can literally build a supply depot, attach it to a transport truck, and drive around picking up players and delivering ammo and health to your whole team.
DESTRUCTION
Obviously this has improved once again. Maybe not bigger like you might expect but instead it's very precise destruction such as walls falling over the correct way when a tank drives over it, glass will explodes inwards or outwards depending on where the explosion came from. Houses will crumble overtime and structures will bend if smaller vehicle rams into it.
GRAND OPERATIONS
This mode will last Four fictional days, each match is one day. You'll always advance to the next day. The objectives will always change too. One day you might be jumping out of a plane to arm bombs and take out the cannons. The next day might have you on a D-day style beach where you just have to push forward and capture bunkers. And how well you did on day 1 trying to tank out cannons will have a physical impact on day 2. If you only took out 1 of 4 cannons for example you might have less tickets to capture the bunkers with or less air vehicles to assist. Day 4, the final stand, only has a potential to be played. If there is no clear winner on day 3 only then will day 4 be played. On day 4 everyone will only have 1 life and have less ammo and resources, it'll be a fight to the last man standing.