Riot today released a teaser image for an upcoming League of Legends skin. We have an image of some armored creature and the words "a butcher long imprisoned" to go with it.
Given what we can see in the picture, the new skin is most likely for Renekton. His rival-bro Nasus got a Legendary-status Infernal skin not too long ago, so we can see Riot giving Renekton the same treatment. He's fairly popular right now, anyway.
The image was posted with the following text:
For many moons our prison held the butcher at bay, but now it’s simply a matter of time before he erupts onto the rift.
You’ve been warned.
Honestly, we just spent all our RP on the new Lunar Revel skins, Riot. Have some pity.
Community comments on the official page are full of speculations, of course, some being a little less serious than others. My favorite has to be the "Infernal Teemo" idea.
Update: Oh, hey! Check out Scorched Earth Renekton below. (Isn't that a Xerath skin, too?)