It's almost time once again...

[Mr. Lemming]

Junkrat booms, are you listenin'
In the lane, Zarya's glistenin'
A beautiful sight
That payload in flight
Walking in a winter wonderland

Everything known/theorized thus far

 

[Mr. Lemming]

HYPE!!

https://blizzardwatch.com/2018/12/06/everything-know-overwatchs-winter-wonderland-2018-event/

Zarya's skin looks freaking awesome, Lucio's showing off his Brony side with a ponytail (yeah yeah, it's "Arctic Fox", but it looks a bit more horse-like)... And this won't be the last of it either, and it all drops on Tuesday!