PES 2009 has undergone a graphical update to ensure its players look and move even more like their real-life counterparts. Similarly, all-new options allow users to tailor the game to their own tastes, while new moves, innovative new control elements and key online elements will further the realism of the new game. Source.
Patch ver. 1.40 corrects the following bugs:
Please be made aware that sometimes, during installation, the process may appear to have stalled with the window status shown as “not responding” for a few minutes.
However, we would like to ask you to wait for the installation to resume rather than to retry or abort as the installation is in progress even when the above symptoms occur.
More translations here.