Like I said in a previous article I still think that GTA five for PC is going to be released in the second quarter of 2014. The reason why I think that is because that is the period when Rockstar Games usually release their successful games. There also is going to be an eight month period between the console version and the pc version just like it was for GTA four.
Now I'm not sure how Rockstar Games is going to think their GTA V PC release strategy because in June there's going to be the World Cup and maybe a lot of people are going to spend money to travel to Brazil or on other football related stuff.
Anyway in my opinion expect GTA V PC to be released somewhere in May or June and also expect the promotion for the game to begin about at least three months before the game release.
PS. I can see a lot of articles posted in the last few days about a February 2014 Release Date. That is NOT going to happen. We are 2 days away from January and Rockstar Games needs time to promote such a big game to make sure they make the most out of their work and get the most money.