http://en.espnf1.com/f1/motorsport/story/27521.html
They will revert back to 1.6L Turbo engines producing 650HP and 10K RPM limit. Thats going to be interesting. And KERS is set to return to provide 150HP boost. Ground effect aero will return as well.
Looks like F1 is going back to the old days. Hopefully this will make things interesting. Seriously, current F1 is simple too boring to watch with little overtaking. With cars so reliant on aerodynamics, its difficult to follow the car infront w/o losing too much downforce.
Hopefully we will see more action in 2013 F1.