The Rockstar Games website has a statement (oddly in the form of a comment to another post) announcing Grand Theft Auto V is gold for its console release, also confirming the legitimacy of the leak of details, apologizing for the spoilers which have ensued (thanks GameInformer). Here's word:

We’re pleased to confirm that Grand Theft Auto V has officially gone gold and we’re now preparing the game for release on September 17th for PlayStation 3 and Xbox 360. Unfortunately, as many of you may already know, some people who downloaded the digital pre-order of Grand Theft Auto V through the PlayStation Store in Europe were able to access certain GTAV assets leading to leaked information and media from the game appearing online. You can read Sony’s statement on this here: http://blog.us.playstation.com/2013/08/24/grand-theft-auto-v-update/. As you can imagine, we are deeply disappointed by leaks and spoilers being spread in advance of the game's launch. GTAV represents years of hard work by many people across the world, and we all couldn't be more excited to finally share it with you properly this September 17th. Please stay tuned here at the Rockstar Newswire for all announcements about GTAV between now and game release as we definitely still have more to officially reveal.

As a specific note to our Social Club community, please remember Rule #1 right above the Comment Box. Please do not proliferate such things here as we certainly don’t want any misinformation spread from things that are fake nor do we want spoilers spread regarding anything that might be true. Anyone engaging in such discussion here at the Rockstar Newswire before September 17th will have commenting privileges revoked until well after the game’s release. Thank you all for your understanding and your support.