do things change like did they mak changes and like what? and if i upgrade will all my rogress be lost?

The upgrade fixed a few glitches. The game itself is the same, and you can install it over your current version without any problems, and your savegames will not be effected either.

The only thing you need to make sure you do is download the update from the same site you original purchased VV 1.0 from. If not your registration key will not work.