I think it was roughly a month ago that on Amzon the the first release date of GTA V appeared, after which it was quickly removed. However, it happened again. According to Amazon, GTA V will be released on March 26th 2013 which is on target with a spring launch. Keep in mind though that this has not been officially confirmed, it's merely a date that was listed on Amazon's website, but it's pretty much the only solid date gamers have received thus far. It's interesting to note that this information has been taken off Amazon's GTA V page.
Now this could be due to two possibilities: either that the release date was right on the spot or that it was completely wrong.
There however are captured a screenshots of an e-mail sent out to everyone who pre-ordered Grand Theft Auto V at Amazon, showing the proposed release date. The PC version is still scheduled a few month later.