Blu-ray.com have got this title listed as region B, but when they review new releases they test them for playability for all regions, so it may well be region A and C compatibility too. When it's released check here for the review and region test result: http://www.blu-ray.com/movies/London-2012-Olympic-Games-Blu-ray/52695/
The technical matter of the region code (hopefully A/B/C which implies Region Free) should be displayed on this product webpage to inform consumers/purchasers - Please ask your website maintenance crew to add this important info. I strongly support Brent's comment.
Amazon's default is to report the region as 'B' for all releases, even if they have no idea what the region setting is. Sometimes they change it, but only if someone comes along and tells them they got it wrong. So far, I have yet to buy a single Blu-Ray disc from Amazon because of this. I guess they don't want my money.
See comment: "I am in the US and I bought this disc. Although region free, it won't play on US PS3 players as it's encoded in 1080i/50hz. However, it played perfectly on my Oppo player. What a magnificent set compared to the POS that was the NBC Olympics highlights disc!"
Usually Amazon indicates when BDs are 1080i50. The problem is with US TVs that often require a 60HZ signal rather than a player problem. The BD may play, but you will have sound but no picture. I have a Momitsu 799 player set for B/2 and forced 1080i60 output, so I can play such as disc.
I live in the U.S. and have a PlayStation 3 and region-free Pioneer DVD player. I've read about the 50/60 Hz problem with the PS3, so that rules out the Blu-Ray. Does anyone know if the Region 2 DVD version has the same Hz problem?
If you have a Blu-ray data drive the software Blu-ray players like the Aurora Blu-ray Player will play just about anything, and Aurora gives away a Blu-ray ripper that creates a (huge) ISO file that the player can play off the desktop or a drive.