These are images for the upcoming "Phineas and Ferb" Season 4 Episodes, which will both be a special commemoration to Platypus Day.
Sidetracked - Agent P teams up with a former partner, a human agent named Lyla, to stop a hijacked train running along the US/Canadian border. In a past mission, they had a falling out, so Agent P must decide whether or not he can trust Lyla and her unique sense of logic to get them through the mission, defeat Doofenshmirtz and save the train's passengers and Canada's national treasure - a moose named Albert. March 1, 2013 (Disney Channel)
Primal Perry - Liam, an Australian platypus hunter who is out to destroy the show’s resident semi-aquatic egg-laying mammal of action. Somehow, Perry aka Agent P must escape this Aussie adversary, rescue ongoing foe Dr. Doofenshmirtz from the error of his ways and maintain the sanctity of the Danville Botanical Gardens. Meanwhile, Phineas and Ferb create an "infinite probability generator" that allows Baljeet to make as many choices as he pleases without being affected by the consequences. Meaning, that's what they're going to do today. March 2, 2013 (Disney XD)