This is all the info so far as to what Xbox will receive in the next minecraft update

it has not yet got a release date but we know that it will be the equivilant to Beta 1.8.1 on pc. Beta 1.8.1 is after 1.8 so I'm assuming we are going to get all 1.8 features aswell

Update 5 consists of:
Beta1.8.1 features:
-Creative mode!
-Endermen!

Beta 1.8 features:
-Silverfish
-Cave Spiders

-Stone Brick
-Stone Brick Slabs
-Stone Brick Stairs
-Brick Slabs and Brick Stairs
-Fence Gates
-Glass Panes
-Iron Bars
-Melons
-New texture for Moss Stone to match Cobblestone's

-New features in the terrain generator.
-Optionally generated structures
-NPC Villages
-Strongholds
-Abandoned Mine Shafts
-Ravines

-New, fractal-based biome code; added and removed some biomes while making all of them more vast than before.
-Rivers flowing through/in between biomes.
-Ocean Biomes, that are deeper and much more vast than before.
-Mountain biome
-Swamp
-Snow in Taiga and Tundra biomes do not generate for technical reasons. They return in Beta 1.9.
-New ocean floor; random mix of sand, dirt, and clay.
-Because of this, clay is much more common.

-Hostile mobs perform attack animations.
-Mobs killed by players drop tiny flashing Experience Orbs that add to your experience bar.

New Food System.
-There is now a food meter.
-Food no longer heals directly but indirectly: if the food meter is above 90%, heals about every 5 seconds.
-All food (except Mushroom Stew) are now stackable.
-Food takes 1.6 seconds to consume, accompanied with an animation.
5 new food items.
-Melon Slices.
-Raw Chicken.
-Raw Beef.
-Cooked Chicken.
-Steak, which has Cooked Porkchop's old texture. Cooked Porkchops' new texture is a tan shade of the same sprite.
-Eating any raw food or Rotten Flesh has a chance to give the player food poisoning which makes the Hunger bar decrease three times as fast.

-New seeds for farming: pumpkin seeds and melon seeds that produce Pumpkins and Melons respectively.

-A new achievement: "Kill a skeleton with an arrow at 50 meters".

-Added Sprinting

-Added Ender Pearl

Mob changes
-Passive mobs will randomly flee if attacked by the player or other mobs (such as Wolves).
-Zombies drop Rotten Flesh instead of Feathers.
-The snout on pigs now protrude from their head.
-Skeletons now hold full-size bows.
-Player-to-mob damage decreased by half a heart.
-Arrows that hit a mob visually "stick" into the mob rather than just disappear.
-Skeleton arrows originate from about their eyes to the bow, instead of above the head.
-Animals no longer despawn which makes it possible to capture them and farm them!

-Shears can now collect Tall Grass and the new Vine

New improved lighting
-Day/night cycles no longer require chunk updates and is a smooth transition
-The lighting on a block is given a tint based on the most prominent source of light
-redish from Non-sunlight light sources
-Blue from Moonlight
-Total darkness keeps the same black tint
-Sunlight gives the same white tint
-Non-sky based light now gives a very subtle 'flicker'.

Improved sunrise and sunset.
-Clouds change color during sunrise and sunset to match the sky color.
-Horizon, specifically haze changes color more vividly during sunset and sunrise.
New particle effects.

-Performing a critical hit on any mob will cause 'sparks' to fly.
-Explosion particles are now shockwaves instead of smoke.
-Tiny stationary bubble particles can be seen when underwater.
-Fog is now thicker and darker deep underground, and gives off particles. Due to this, the void appears black

-User-placed leaf blocks no longer decay.
-Cloud height raised to the top of the map, so clouds can no longer phase through blocks.
-Cloud movement syncs with the game's time.
-Rain and snow both render faster
-Armor bar moved to above hearts, due to food bar.
-Both Wooden and Stone pressure plates can now be placed on fences.
-Improved chest model with a 3D lock.
-Destroying boats and minecarts now creates particles

Updates on info I missed

Credit- Blade908:
Super flat world type, this is great for tutorials and building in creative mode

Proof:
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Please appreciate that this was not just a copy and paste, I removed all pc related items in the update topics and listed the relevant parts together, thank you