The lack of non-emulated 16x9 S3K footage for the trailer is a mark against that being the case. Taxman & Stealth had already built 16x9 Angel Island for their proof of concept, unless this project was just recently greenlit and they somehow worked on nothing for the past 3 years, they should have had 16x9 footage of the game already available via the work they did before. It would be nice if they did involve the previous team, but I think they would have promoted that up front like they did when Mania was announced. Neither Stealth or Taxman have come out denying involvement, so there's that in favor of them being involved, but the footage choice for the trailer is weird. I wouldn't be surprised if the project was literally greenlit just this year.