So, since S3 released, I’ve been seeing these 2 horizontal, and tiny, side-by-side circular symbols in the upper, left-hand corner of the menu screens - the right depicts a gaming controller and the left depicts what appears to be a menu.
They don’t appear to be there for any real reason, though, as I can’t interact with them. Why are they there?
Shadow Lords confirmed.
…duh, Duh, DUH!!! 
isnt the second a keyboard and it only means you have crossplay enabled?
The symbols display what peripheral you have plugged in and re ready to use. If the symbol is green then that means either your keyboard, controller/arcade stick, or both are working properly and can be used.
I see these on PC but not on Xbox.
And i see the controller, even when i dont have one plugged in, so i dont think that the reply above me is correct.
Is it green or grey?
green. both of them
Hmm, I always assumed that it meant what controller type you were using. Maybe it is a show of if you’re playing against PC or Xbox like someone said above.
Mine are never green, and I have a wireless controller and a wired USB keyboard connected…