Wow, those look amazing! Here is a summary of new features based on the above screen shots:
- Clouds with rain.
- LOTS more bricks and blocks to build with.
- Pets! (I see a turtle)
- New doors
- Bigger trees
- Slimes have umbrellas when it rains (it looks like)
- Rainbow thing?
- Better water
- Zombies with coats when you're in the snow biome
- Bunny gun?
- Much more backgrounds and wall tiles
- New Jungle Biome boss (Plantera)
- Underground trees and more plants
- Lots more items
- Half bricks
- Stained glass
- Coloured water
- Lots more creatures
- Bigger variety of chests
- You can dye your armor!
- A beach ball
This is going to a big update! The devs also mentioned better network code, which will be a godsend, setting up port forwarding or using something like Hamachi is too complicated for most.
Oh, and you can run over terrain with 1 block high "steps" - that is probably the thing I'm looking forward to the most!
This update can't come soon enough!