General

Large amount of internal changes.

Demo mode playable through non-premium minecraft.net accounts.

Added adventure mode.

Large biomes world type.

Open texture pack folder now works for mac.

Creative mode updates.

Ender portal frames added in creative mode.

Flying in creative mode is no longer affected by lava and water.

Shift- clicking in creative improved.

Potions will be in creative screen.

Now added deletion box in survival inventory.

Singleplayer will be a local server.

Gamemode and allow cheats button.

Removed the downwards knockback while drowning.

Blocks and items

Now added emerald.

Now added emerald ore.

Added block of emerald.

Added ender chest.

Ender chest has 1 inventory per player.

Added sandstone stairs.

Added coco plants to grow on the side of jungle trees.

Coco beans have a new texture.

Coco beans drop from jungle trees at the same rate as apples.

Added trip-wire hooks.

Added book and quill and written book (now we can write in books!)

Added a new type of golden apple.

Added bottle o' enchanting to survival.

Added chainmail armour to survival.

New slabs and stairs of the new plank types.

Wood slabs behave as wood not as stone.

New gravel texture.

New dispencer features:
Dispencers will eject blocks of water and lava (from buckets).
Will be able to place minecarts on rails and boats on water.

Levers can now be attached to the bottom of a block.

When exposed to rain cauldrons have a possibility of filling up slowly.

Players can now see the cracking effect when other players mine a block in multiplayer.

Inventory, crafting and smelting

Different crafting recipe for books.

Empty buckets are now stackable up to 16.

Wooden tools can be burned in furnaces.

Map, weather and structures

Added pyramids in the desert biome.

Added jungle temple.

Villages spawned in deserts now have a different style.

Rain will slowly drip through leaves.

Villagers and mobs

Can now trade with villagers.

Extremely rare, nether portals can spawn pigmen.

Baby animals follow their parents.

Commands

Commands are now in singleplayer.

Bug fixes

Fixed arrows 'warping upwards' in multiplayer.

Well thank you for reading this and also they are not all of them.
Plz diamond if u thought is was helpful.
P.S. the update is gonna come out on august 1st.

Prof.Frink lol