TMNT IV - Super Awesome Remake!

[Rökkan]

Hang on. There was a Genesis game called TMNT: The Hyperstone Heist. It borrowed heavily from Turtles of Time (namely the levels).

I hate that it'll probably be e3 before we can get clarification on this.

In the second screen, it appears a boat stage. Hyperstone Heist didn't have the boat stage, although the one in the city's asphault (appeared at the first screen) was pretty much the same.
Plus Hyperstone Heist is very unpopular, specially compared to Turtles in Time, so it's a lot unlikely to be it.