User blog comment:Poptropica411/Phineas plus Isabella equals Phineas and Ferb: Across the Second Dimension in Fabulous 2D?/@comment-3240527-20110106040938/@comment-1896159-20110225023414

ATSD is not the last episode. It is not technically even an episode, it's a TV movie. I honestly doubt it would be the last episode since there's only a few months left until its tentative premiere date, and Season 3 is only starting in less than a week.