Rovio demoed a little of the upcoming Angry Birds Rio based off of Rio the animated movie at SXSW festival. The demo shows a completely new and redesigned Angry Birds concept without any pigs this time, and instead you are aiming to free birds inside their cages and moving birds. Angry Birds Rio debuts on March 22 exclusively on the Amazon App Store for the Android marketplace and on the Apple App Store later on. Check out some gameplay footage after the break.