I think it's inevitable we'll get an HD Port of OOT/MM HD next gen.
When WW/TP are out, they'll have to get something out to fill the now 6-7 years we have in between 3D Zeldas, and the well has been tapped of 3D games that arent already on the system.
As for a full, ground up FFVII style remake? I think someday, but not for a loooooong time. Again, it's taking so long to develop 3D games now, until technology gets to the point where that changes, I dont think it's worth it for Nintendo to invest all that time into a remake.
Plus, OOT 3D upscaled looks STUNNING. I dont think we'll ever need anything else