Just watched a PES 2009 video and it looks like it puts right the very few flaws that 2008 had. The addition of IR shooting and a more reliable tackling button should make it the ultimate footie game on any system! That's even without taking into account the very interesting co-op play which lets one player use the Wiimote system to direct the team and the second player to control a single player with a classic controller.
Totally awesome! After seeing it in action, PES 2009 has jumped up to 2nd place in my 'most wanted' list (only just behind Madworld).