User blog comment:Dragonknight86/Phineas and Ferb on Hiatus after Season 4 ends/@comment-188360-20140325213239/@comment-1896159-20140328142734

Swampy did say on Twitter that they were going to plan "for what's to come" so whether that's for the show or for a future project remains to be seen. If this is indeed the show's last season, at least it seems like it's gonna go out with a bang. You are right, 5 hour long specials for a show that's generally 11-minutes is hard to ignore., but after seeing the ratings of all the Disney shows drop and Wander over Yonder get moved to Disney XD after barely half a season, it's a little startling.