From what I can tell (reading the Wiki and rumours), originally the team made a direct re-make of the original game. Exact same gameplay and scenario with a few tweaks and updated graphics. It was more a test to see if it COULD be brought into today's gaming world. The project was never released and instead they came up with this game, it's less strategy-heavy and far less micro-management than the original, but there's new features that were felt to be missing from the original.
However, it's the direct re-make the team initially did that is rumoured to be included with this, it's not confirmed either way, but it certainly will not be the original from '94. If anything it'll be the updated version of the same game. Even then, it's only a possibility.