PESFan posted two videos on their site today, showcasing both the stadium editor and the league editor.
The stadium editor looks incredibly specific. It'll be good for players to create their own stadiums to exact detail. I feel re-creating real stadiums will be hard, but not impossible with such a good looking editor.
The league editor interests me highly. The idea of creating your own emblems, and importing them onto your shirt is a fantastic feature. It looks very simple to do too. Option files will be awesome this year, that's for sure!