My Cousin works in the HMV in the Bullring, he told today that around about 7,000 copies of PES5 could be released on Friday 9th September, if not they WILL be released in the UK before the official release date. He told me the reason for this is because last year over 1,000 copies got stolen whilst them being delivered to stores around the UK a few days before they where due to be sold to the public, that’s why last year PES4 was on sale 1 or 2 day's before the official release date in some stores, due to the stolen copies being sold on the street. Konami informed HMV about this, obviously because they don't want it to happen again. So i guess they last year, the copies where probably stolen from HMV.
I brought PES4 on the Thursday (1 Day before the release) from GameStation last year and I asked why has it been released a day early and they told me the exact same thing about copies of the game being stolen and sold on the street, so they where told to sell the game earlier.
So if it is not in HMV this Friday, I suggest you keep checking if you really want it before the official date.
If you don't belive me fair enough, just wait and see what happen's.