A few days back we had some news on the PC version of the GTA V and it hinted towards the game being released sometime in early 2014 and it seems that this news might hold a lot of truth. An Amazon employee has also stated that the time at which the GTA V PC will be in stock is also known by now and it is most certainly going to be February. But the anonymous employee also gave an indication that the exact date might still not be known and Rockstar was the better one to be contacted in case more details were required.
Rockstar has recently been very conscious as far as replying to GTA V PC queries is concerned and this might be an indication that they are ready to bring out something huge. Whereas this might be a good indication and a reason to believe that the game is going to be released on the said month but we have other sources as well which are claiming that the game is going to be released in March.