If im being a blunt i haven't noticed a huge difference in either graphics or sound.
There is however, a huge change in speed, passing, shooting and general game play. It is now impossible to run through a team with Messi or Ribery or anyone, solo goals will now be a rare delight, as they should be.
Team goals, quick sharp passing and a slicing through ball are now the orders of the day for PES. I am made up with the demo and i am looking forward to the full game, don't get me wrong but i can't help but feel PES has lost a little of its individuality with this one.
PES has always been the arcade style Football sim, with fun and enjoyment the main aim. Which is why i have stuck with PES all these years. FIFA has always been very dry, soul-less, consumer driven, churned out each year with a new coat of paint and very little genuine fun in the game, at least for me anyway, there has never been any real satisfaction with any goal scored in FIFA.
This year though, and maybe this is just me, but It seems like Konami were trying to mimic FIFA a little too much this year. I think we've reached the stage where the two games are becoming so close, that in a few years they'll just be the same game, the same product under different titles.
Still though, i enjoy the game, i just hope next year, Konami focus on getting back to the real roots of PES that made it such a winner, and focus less on creating the perfect Football sim.