I actually made a changelog for every single thing and information i could find. I'll list it up for how it is going SO FAR
+Spider mode
+New Orbs like the hold-to-spin and Throw-down
+Fireballs
+New shake effect
+New jump pad
+New ground/background
+One new Level in Insane difficulty
+New blocks
+Tons upon tons of new Triggers: Rotate, Skate, Follow, Shake, Animate, Follow Player, Touch, Count, Instant Count, Counter, Collision, Death, Show Player, Hide Player, Show BGEffect, Hide BGEffect, and probably some more.
+Addons to Practice like fast checkpoints and fast respawn
+Lots of new icons, balls, ships, waves, colors, robots, and some spiders
+Controllization of monster animations
+Bat monsters
+Signs
+Electric things
+Still Lava and flowing Lava
+New color choice thing in the Editor
+Lots of new editor tools in the Editor, to make it easier to build
+Diamonds
+Daily Challenges rewarding you diamonds
+Diamonds rewards you special icons
+Icon shop with new currency (called Mana Orbs), no old icons in shop (icons from before 2.1) and you get currency by completing levels and/or getting a set amount of percentage on a level (You get 10% of the full currency if you got 10% on the level, 20% if 20% and so on), and you get a set amount of currency of how much stars the levels are worth, for example: 5 star level = 100 currency, demon = 500 currency, and you get 50% more currency if you complete the whole level, (demon would then be 500 + 250 = 750 when completed)
+New vault with custom Brain challenges
+New Mappacks
+Moving objects are UBER OPTIMIZED to 400% better optimization, especially good for mobile players!
+Anticheats, but not for leaderboards yet
+Mini ball- and Cube finally has their big skin (same skin as normal size, just like UFO, Ship, Robot, And wave allready has)
+Blocks that allows waves on it
+Blocks that disables auto-hold-jump on them
+Move bug, where objects that will move would sometimes move away from their spot when you go in the Editor, FIXED!
+Some new trails
+Lots of new layers in Editor (B4, B3, B2, B1, T1, T2, T3)
+Shards
+Daily Chests
+"Epic" levels, where a level that's epic, gets an extra burny effect as/with the glow
+Parental Control, making those with it on, can't search swear words in levels, or other bad words like "hell"
+Unlockable Death effects
+New achievements for stars, demons, insanes, diamonds, user coins, coins etc etc
+Hall of Fame, for the daily levels that isn't daily anymore, where the new daily levels are added in, and yes, you still get diamonds for these levels
+Blocks that you can jump up and hit your head underneath it without dying
+New strange key, called "secretKey"
+More icons than ever in any other update
+Seperate icons for easy and hard demons. The medium one being the current icon for demons