Sony has confirmed to retailers via its official Indian distributor that Gran Turismo 5 is confirmed for a November 24 release, and since India is part of the SCEE territory, chances are that this is also the date for Europe and the Middle East. Bangalore-based retailer GameZen received the release confirmation from Milestone Interactive (the distributor) and
posted the information in the vendors’ section of the IVG forums. They have since been contacted by Milestone and directed to hold off on taking orders.
http://www.indianvideogamer.com/2010/11/november-24-release-date-for-gt5/
Some things to consider:
1. Before you question the source, this was the same site that announced the GT5 Signature Edition.
2. The initial announcement of the delay came from some random Russian blog that reportedly got the info from Sony's Russian distributor, so this isn't at all implausable.
3. Sony has re-scheduled the game's Madrid launch party for November 23rd, the day before.
I think this is the real deal, guys!