They are adding a lot of new features to the game according to Eurogamer, some of the new features will be a power gauge for the goalkeeper when throwing the ball, new controls to attack and defend.
Konami says: The term PES FullControl describes several new and improved features that give you even more control about the players and the ball in PES 2013. Here are details on all the new features:
Dynamic First Touch:
PES 2013 introduces subtle ways to receive the ball, from traps, gently lifting it past an attacker to run on to or a variety of other moves. First touch is everything and players can trap the ball using the R2 button, killing the speed of a well-hit pass and bringing it instantly under
No word on whether they have bought to rights to use the real football team names so I doubt it is happening.
There is also going to be unique attributes depending on the skills of the player so expect cool tricks from the likes of Merci and Ronaldo.
Here is the gameplay trailer, it features Cristiano Ronaldo, showing some skills: