I've checked the Konami Europe website and it does not say anywhere in the Champions League announcement that the PS2 version of PES 2009 will be released on October 30th.
Only the release date for the PS3, Xbox 360 and PC have been confirmed with a release date for the Wii confirmed for 2009.
I think the PS2 release date will involve some guess work at the moment so you should take that link above with a pinch of salt.