Yes mainly extra help in the higher versions. Where did you get the .tax2016 file? The first thing you may need to do before you open your tax return is to update the program and install any state programs you had. Then open your file. So you first might need to start a fake return to be able to download the state program (go to FILE - NEW).
BUT it is too late to update 2016 or download any state programs you used. They only support the last 3 years.
