What's the point of this thread? The information here is just copy-pasted from the Minecraft wiki, except for that you removed some stuff: http://minecraft.gamepedia.com/15w31a
Also, there's already a thread discussing 1.9 and it's content: http://www.minecraftforum.net/forums/minecraft-discussion/recent-updates-and-snapshots/2331356-get-ready-for-1-9-information-straight-from-mojang
If you would like to see more minecraft info or some secrets contact me
What "secrets" do you know which can't already be found on the wiki?