Bubbles will show up moving towards your bobber just before you have something on your hook. This has the appearance of a fish swimming towards the hook.
Is about ten blocks deeper than normal oceans, the maximum depth is in the low 30s
Biome Variants/Technical Biomes
Over 20 variants for the biomes.
M - Biomes with an M variant are much rarer than any other variant.
Extreme hills M, taiga M, roofed forest M, jungleEdge M, birch forest hills M, cold taiga M, extreme hills+ M, savanna M, savanna plateau M, swampland M, jungle M, mesa plateau M and mesa plateau F M are more mountainous versions of their normal biome counterpart.
Desert M has patches of water unlike normal deserts
Birch Forest M has taller birch trees than usual
Savanna M has grassless dirt (coarse dirt in 1.8 and above) and mountains that can generate above the clouds and up to Y: 220 on rare occasions
Plateau - Biomes with a plateau variant are like the hills technical biome, but flattened at the top
Savanna plateau and mesa plateau are both plateaus
These are landforms which are raised by up to about 30 blocks and have flat tops
Mesa Plateau F - A variant of the plateau with trees
Mesa (Bryce) - A rare variant of the mesa biome which works similar to ice spikes with tall clay spikes generating from the sandy mesa floor.
Hills - More technical hills biomes have been added to fit with the new biomes.
Birch Forest Hills,Cold Taiga Hills, and Mega Taiga Hills can now be generated.
Beach - New beaches separate certain biomes from oceans and rivers.
Stone Beach is composed mainly of stone and often generates between an Extreme Hills biome and a body of water.
Cold Beach is composed of Sand with a layer of snow on top.
Usually generates between a cold biome, such as ice plains, and a body of water.
The light level actually falls to 7 during thunderstorms now (before it stayed at 12 like normal rain but hostile mobs could spawn as if the light level was 7).
Grouped a few options into the Controls section, allowed rebinding of 1-9 hotkeys, screenshot key, cinematic camera toggle (can be rebinded and no longer has a default key), camera switching and added sprint button which will keep re-engaging sprint whenever possible (left control by default)
Music & Sounds
Now allows separate volume controls for Master Volume, Music, Jukebox/Noteblocks, Weather, Blocks, Hostile Creatures, Friendly Creatures, Players and Ambient/Environment
The Resource Pack screen
Now a split view to list selected and unselected resource packs - multiple resource packs can now be used simultaneously with higher priority resource packs getting to use eventual duplicate textures/files
Video Settings
Render Distance is now a slider ranging from 2 to 16 chunks, Max Framerate is now a slider ranging from 10 to 250 fps, Unlimited; Mipmapping can be set to levels 1 to 4 or disabled, Anisotropic Filtering can be set to 2, 4, 8, 16 or disabled
Super Secret Settings
Plays a random sound when clicked and cycles through various experimental shaders: fxaa, art, bumpy, blobs2, pencil, color_convolve, deconverge, flip, invert, ntsc, outline, phosphor, scan_pincushion, sobel, bits, desaturate, green, blur, wobble, blobs, antialias
Can be reset by pressing F4
Language Selection
Added 'Force Unicode Font' option which allows you to change whether Unicode font is forced for text or not.
Inventory
In creative mode, the display item for the Decoration Blocks tab changed from Rose to Peony.
The armor boxes go black when the cursor is away from them
Putting the cursor over an armor box will cause it to display what armor is put there
Server list
Can now be refreshed using F5
Added server icons
Added support for multi-line MOTD comments which do not go offscreen
Hovering over the player count will now show a few online players
Logging
Now done using Log4j 2
Default logging location is now in logs/latest.logs, older logs are archived in logs/<year>-<month>-<day>-1.lg.gz with the number at the end increasing each startup
The way logs are saved can be changed to, for example, html pages, databases, errors only, no logging at all
Now ties in with the scoreboard system - added 744 new objective criteria that were previously tracked with statistics and achievements
Are now per world/server
Achievements screen can now be zoomed in and out using the mouse wheel.
Achievements don't appear on the achievements screen if more than five achievements need to be achieved first (i.e. "DIAMONDS!" doesn't appear until "Getting Wood" is achieved).
Data for blocks, items, and mobs don't appear in their respective tab in the Statistics screen unless the player has crafted/placed/mined that block, crafted/used/depleted that item, or killed/was killed by that mob.
When a player earns an achievement it is now announced in chat. This can be turned off on servers by changing a line in the server.properties file.
Can be hovered over to show an achievement tooltip
Cannot be turned off in Singleplayer
You can earn achievements 'Time to Mine!', 'Time to Strike!' and 'Time to Farm!' by crafting the given tool with a material other than wood
Can now give items to players with custom names, lore and enchantments
Can give items with other custom NBT tags, such as SkullOwner to obtain the head of a specific player, or even custom mob spawner traits, which removes the necessity to use an NBT editing program to obtain these items.
Will now print renamed items' name in chat and show tooltips when hovered over
Applies to items with durability. Nullifies any usage dealt onto the item.
List tags no longer need to be named
No longer crashes when given the wrong type (integer/short)
Added <structure>.dat files in data folder for storing structure data
Contains .dat called Village.dat, Fortress.dat (Nether Fortress), Temple.dat (Desert Temple, Jungle Temple and Witch Hut), Stronghold.dat, Mineshaft.dat, and others
NBT structure consists of the individual parts of each structure, labeled "children," the chunk it originates in, a tag called BB, and an ID for what type of structure it is
The children tags have information on each part of the structure and the type of part it is
"Useful to map makers, modders, players and server admins"
Added a way to do things when clicking things in chat, like executing a command
Other actions include opening a URL and showing an item tooltip when hovered on
"Saved screenshot as" messages can now be clicked to open the screenshot, takes you to the .minecraft folder
Names can now be clicked to PM people
Added /tellraw <player> <raw json message> to send chat messages with custom functionality to players - sender will not appear
Syntax example: /tellraw @p {text:"Daytime? ",color:"green",extra:[{text:"Click here!",color:"blue",clickEvent:{action:"run_command",value:"/time set day"}},{text:" Nighttime? "},{text:"Click here!",color:"blue",clickEvent:{action:"run_command",value:"/time set night"}},{text:" Have fun!"}]}
Fog
Removed the thin fog around the player
Fog is only at the edge of the visible chunks now
Death Screen
If you die and you select the 'Title screen' button, a prompt will ask if you are sure you want to quit and give you the options to go to the title screen or respawn and continue playing
All blocks beyond X/Z 30 million (±30,000,000) from origin now act as solid blocks.
This includes air blocks.
This creates essentially an invisible wall at the boundary.
As all blocks function as solid, if the player is moved outside the boundary via external tools, they will be unable to move outside the block space they are within.
Despite the above, the camera can still move normally. This reveals that ghost chunks still generate, as the camera can pass through normally solid blocks beyond the boundary.
Now output a signal relative to the amount of entities on them, always starting at 1 signal strength if any entities are present
For Light weighted pressure plates, every entity adds 1 strength to the signal
For Heavy weighted pressure plates, starting at 1, every 10 entities adds 1 strength to the signal (Example: 11 entities increases signal strength to 2)
Maps in item frames now cover the whole block so that connected maps join together smoothly. The item frame can only be seen when viewed from the side.
Now show colors for colored wool and stained clay, allowing a wider range of colors visible on maps
Each different type of block has a different shading on the map
Can drop a potion of water breathing upon death as a rare drop
Now drink a potion of water breathing when they are trapped underwater
Have been added to the mix of low light-level hostile mobs, now spawning anywhere where the light level is below 7, including at night in every biome and in caverns
They usually spawn in pairs
They have roughly the same spawn rate as the Enderman