Despite lack of confirmation from Rockstar
With Rockstar still commenting that the release of Grand Theft Auto V for the PC is only possible, it would seem that Amazon thinks that a PC release is more than possible, as the PC version is showing up for pre-order on its site. As has happened in the past, if a PC release is coming it will arrive after the console release has been out for at least a bit.
PC Gamers have a petition they have given Rockstar that pleads for a PC release. It could be that the possibility of a PC release is just that: a “possibility” and Amazon is banking on the fact that it will happen based on what Rockstar has done in the past. We will have to wait and see what happens, but it could be that the news on Amazon is a clear indication that we should expect an announcement from Rockstar soon.