From user imankit12 on Reddit as there is no official changelog as of now.
1) fpp driving
2) scope swipes( don't know what to call it ,sorry),,,but you can now change scopes without selecting it from the backpack
3) night mode( higher chances of getting the night mode in erangel during the event period)
4) M762 ar rifle and a new dmr QBU (5.56 mm)
5) new weapon reloading animation (M4,scar)
6) few new achievements (skills required,not money)
7) you can now throw grenades while peeking,no need to show your whole body to enemies..xd
8) new picture style has been added (cinematic)
9)new peek and fire options( hold,tap)
10) back to old lobby in erangel
11) can throw candy tnts/pumpkins( replaced by apples)
12) however there was no settings for adjsuting fov
13)a new vehicle( don't know the name)
14) music playing while driving
15) you will be able to be matched with the team mates based on their language..
16) landing like pc version
17) new animation for going prone while sprinting
18) map textures updated
19) icons and models for backpack and helmets has been changed while picking it from the ground
20) blue circle now leaves a semi-transparent blue color behind it
21) you can now spectate the enemy who killed you.
22) there is an option for changing blood colors now.. 'MYTHIC'- for red and 'UNCOMMON- for green
23) there is a change in animation when you fall from a high place..(can be noticed more while playing fpp)
24) bullet shells of bolt action sniper rifles when hits the ground creates a noise ( just love it)
25) new area in the northwest
26) autumn theme in erangel
27) you can now set your scope limits on how many of the scopes to pick (from the pick up option)