Lost Ending to Sonic 4

During the development of sonic 4 episode 2 there was a cutscene removed that would have hinted at a third episode. In the files off sonic 4 episode 2 the audio to the cutscene can be found: www.youtube.com/watch?v=uyPqzufnEpI A few months before the launch of the game just like episode 1 it also leaked. For the users who had the game pre ordered on steam they were able to access a early beta of the game. In the files of the beta, text stating "To be continued" can be found in the files: www.youtube.com/watch?v=jtL9ELJzXEU Its been over a decade since the launch of sonic 4 episode 2 and still no visuals have surfaced. Years ago somebody got in contact with the brand manager of the game and he said this: www.youtube.com/watch?v=iKjm8BUdwJI

I would like to contact other people associated with sonic 4 but I'm not sure who else to possibly contact.