It appears that GTA V on PC has emerged on Amazon.de. Its currently going for 59.99 Euro, with no release date. However, this may or may not be true, as sometimes Retailers get quite ahead of themselves and eventually the listing may disappear.
via N4G: pc news feed http://n4g.com/news/1376991/gta-v-pc-emerges-on-german-amazon
via N4G: pc news feed http://n4g.com/news/1376991/gta-v-pc-emerges-on-german-amazon