Such listings don't mean anything. Practically every (online) retailer out there let you pre-order GTA V for PC because the past has shown us that every GTA of the main series comes to PC eventually. Of course the retailers are interested to put up such pre-order offers as soon as possible so you'll pre-order at their store and not not at the competitor's.



Btw, GamesOnly.at is not German, it's from Austria. I don't know if it's the largest retailer for video games but it's definitely a very popular one (like gameware.at) because you can buy all the uncut versions there. In Germany practically every game is cut because of the strict youth protection laws. Therefore many German gamers buy their uncut games from retailers in Austria or Switzerland.