Disneyland California: New Monorail, Innoventions New Exhibits, Disneyland Dream Suite
Disney's California Adventure: Toy Story Mania!, Pixar Play! Parade, Preview Center, Updated Playhouse Disney Show
Six Flags Magic Mountain: X2: Xtreme to the 2ND Power, Thomas Town
Universal Studios Hollywood: The Simpsons Ride
Knott's Berry Farm: Pony Express
Sea World California: Sesame Street 4D: Movie Magic, Sesame Street Bay of Play
Legoland California: Land of Adventure including Lost Kingdom Adventure, Cargo Ace, Beetle Bounce and Pharaoh's Revenge, Sea Life Legoland opening adjacent to the park
Six Flags Discovery Kingdom: Tony Hawk's Big Spin
California's Great America: Firefall, Ice Show Spectacular
All of this adds to 8 new rides, 3 new play areas, 4 new shows, 2 updated rides, and two new exhibits.
This is all of what is confirmed, I am sure there will still be more to come, even with this I am satisfied but I'm sure more will be announce throughout the year.