What we know about the next champion so far:

So with the ''Something in Brush'' teaser that recently got uploaded to PBE, we get slightly more ''info'' on who/what the next champion might be.

At this point, the Animal-like sounds we're hearing don't tell us a lot, but that's not all the information we have so far either. We also know the gameplay designer for the next champion will be Riot Harrow, as you can read in this redpost on Surrender@20.

According to his page on The LoL wiki, Harrow worked as a Narrative Writer and contributed to the stories of Hecarim, Jayce, Aatrox and a bit of Kalista. So this is going to be the first champion-gameplay he has designed!

I am personally really hyped to see what he has come up with, since every designer comes up with their own unique ideas (RabidLlama being a good example, with Bard and Aurelion sol)