I have short information for you. In minecraft probably will be a tripwires which you can see here:

 

It will be another cool feature for map makers. But other cool thing will be Emerald block like a diamond block or iron block. Look at this screenshot:

Emerald Blocks

http://www.minecraftforum.net – source

 

Looks awesome! I can’t wait for next version of minecraft! 🙂

Minecraft is a powerful game but in this game can will be a lot of more things!