I agree that It seems logical that what is listed on the official UBI site is accurate, unfortunately I think there is reason to doubt the accuracy of that date (I hope I'm wrong.) In the first post of this thread, and the video that sparked it, it was stated that the PC version was coming "at a later date." With the XBOX version and the PS3 version releasing on May 25th, it seems unlikely that by "a later date" they meant 6 days later. Surly someone must know if its accurate or not, and if it is, it should be simple to confirm, no?
Anyways, I understand you probably can't find out because you are limited to the information that is passed on to you. We'll just have to continue to wait. Thanks again.