What's going on with Tailsonic the Fox Extras?

As I mentioned with both the Tailsonic and CMO subseries, and with Vs. Tailsonic's main story, Tailsonic the Fox Extras is supposed to be a series based on the upcoming game. However, this series is still in the full development stage for the game. This series is still canon to the game. But as it is titled "Tailsonic the Fox Extras", as seen in the first episode of Tailsonic and CMO, the series takes place before the main game.