squid830: Apparently the version on here has been updated since it went live (version numbers are freaky with this game for some reason though).
MatrixRaven: How can you tell the version number of a game you're running? How do you tell when the last time a game was updated when you're on the store, before you buy it?
Generally there are release notes and the like put out on GOG and Steam, often indicating version numbers and change logs. Often officially, sometimes also unofficially (e.g. by players and the like). Check the forums for the game you're looking for, they usually have the info.
In the case of this game, I'm just going by what others have said. I grabbed this as soon as it was released and didn't notice any updates to my game as of yet, so AFAIK there hasn't been an update for it yet so I'm guessing there was possibly a botch-up with the game which was noticed before release (unless it happened within the first hour of it being unlocked).