User blog comment:Ultimatephinferbfan/Phineas and Ferb Charity Summer 2011/@comment-3029989-20101212154013/@comment-3006892-20101212165358

My theory: If they where planning on making the movie the final adventure, they would have called it "Phineas and Ferb: The Movie" or "The Phineas and Ferb Movie". Since it's called "Phineas and Ferb Across the Second Dimension", I find the possibility of it being the end highly unlikely. Does that make sense?