User blog comment:Mobo85/Rappin' with Phineas and Ferb...and Dan and Swampy and Miss Piggy/@comment-3473686-20110817234900/@comment-1463891-20110818171559

Okay, here's why you shouldn't be concerned:

- Season 3 is scheduled for 35 episodes. - Of those, we have seen 9 1/2; "Across the 2nd Dimension'' counts, there are 22-25 episodes in the can. - They were just writing the 100th episode during Comic-Con, so that one won't be ready to air until at least next summer, meaning the season has to go at least that long. - They're only showing one segment at a time now, so obviously Disney wants to stretch it out (meaning the remaining episodes will last at least well into 2012 if not longer.) - Who's to say after writing/producing/performing 100 episodes, a break wouldn't do everyone involved good?

TL:DR: Just because Season 4 hasn't been picked up yet doesn't mean the show is on its deathbed.