I was on the infinite flight main website (not the community), and I saw a picture of the 777-200 in the old united livery (before Continental).
Here is a picture:
If the picture does not work, refer to infinite flight.com and scroll down to where they have a slide of 8 or so planes.
It was found next to the confirmed British Airways livery. Does this mean we will be getting the old United livery in 20.1?