User blog comment:Mobo85/Rappin' with Phineas and Ferb...and Dan and Swampy and Miss Piggy/@comment-3473686-20110817234900/@comment-2156322-20110817235728

"will actually be temporarily out of work soon". No worries, the other 23 should come on soon. I think they will ask for the 4th season by the end of this year.