Minecraft.net has a page that I recently discovered. It's about MineCon Earth, and the very last section of it contains the picture you see at the top saying something about "It's up to you to decide".

What on MineCon Earth do you think that could be?

Many think it's a new mob, likely a boss. It strangely reminds me of a villager. It could be related to the illagers, or my favorite mob, the vex. I heard about some stuff saying that if Mojang got enough retweets on a certain subject, they would add two new bosses. Or is this just a picture of "unknown mobs" - a, b, c, and d, one of which has already been added? Or is it just a few players? Or is it something completely different? I'm hyped to figure out what that is. Unfortunately, all we know of 1.14 is that it'll add a heck ton of stairs & slabs. At least that could mean vertical slabs...

_mouse36