Jeb released this teaser image moments ago - it seems that emerald blocks could be a reality in the next big update! Alongside the already highly-anticipated villager trading, slight minecart control, and a host of other features and fixes, 1.3 is already shaping up to be a solid winner.
The most recent snapshot covered some of these features already, including the versatile Ender Chest, which lets you set up a sort of post-box to exchange items between over long distances; stackable buckets, more realistic star textures, dispensers having the ability to eject water or lava from buckets placed within them, and much more.
What else is coming? Well, we can't say just yet, but in the meantime, enjoy this TNT cake, made by Minecraft Chick!