Sufyan at vGSaints writes:
Yep, Grand Theft Auto 5′s release date has been leaked by Amazon. It had to happen, and now was the time. Amazon UK recently updated the release “date” on the console version of the game. It’s not the exact date, but here: it’s this year.
Apparently the game is due for release this December. I'm doubting they accidentally put it up, so it’s possible that RockStar Games will be giving more information about the anticipated title.
In case Amazon removes the date, here’s a screenshot.