Awesome news, this is the one game I was always sad to not have a OP port of.
I wouldnt count on getting FS_Open going on the pandora, would have to be one of the early versions. But the amount of mods that are still working on those are rather to limited to be worth the trouble, and even if you could get FS_Open running smoothly, many of the models used in mods arent very optimized to the point where even a good gamer pc starts suffering in some of the more intensive missions.
Anyone who still have FS2 on their pc should check out the Blue Planet mod.