Konami has put out a statement detailing some of the improvements and features to be found in Pro Evo 2012. PlayDevil has posted the whole piece.
Here is a snippet:
"These elements combine to create a game that flows and ebbs like a real match, with individual shows of brilliance changing a game, and more control over every aspect of play within a wide-ranging yet instinctive control system. PES 2012 will turn the heads of fans everywhere.”