The day may be over but the Sonic Runners news isn’t. People are slowly progressing through the story (which we now know is a new plot with each episode) and finding out more tidbits and appearances. For example Fantastic, a user on the Sonic Retro forums, discovered that the Master Emerald is referenced, the first time in perhaps seven years.
Metal Sonic has also been confirmed to be in the game.
We also have high-definition gameplay of Tails (sort of, there’s no audio) and Knuckles. You can see the video below.