TSS forum member speedfreak has found a new video of Sonic 4 Splash Hill with the latest build on it. In it, we can briefly see the world map Aaron Webber has been eluding to. We also get a clear video of the latest build which is played with no homing attack made. (Not sure if it was intentional or the guy just really stunk at playing.)
Here is a snapshot of the world map. Just what is that shaded area to the right? The possible start of Episode 2? If so, then that could mean the episodes can be locked on to one game. That’s just speculation of course.
Thanks to speedfreak for the youtube link and Core for the image.