User blog comment:Leanilla/Two possible Dates for a promo of PnF:AT2D/@comment-3347644-20110507043332

That reference made me smile. Aw. :)

As for the trailer, I'm more partial to a May 13th.

A) There is a legitimate Phineas and Ferb episode premiere that night. Sharpay's Fabulous Adventure's audience will (presumably) consist of Ashley Tisdale fans. Ashley Tisdale fans do not necessarily constitute Phineas and Ferb fans.

B) Friday nights generally accumulate more viewers than Sunday evenings.

C) Ask a Foolish Question/Misperceived Monotreme has not been released onDemand. If that's the case, marketers are attempting to gather more viewers during the actual premiere. *Something* significant will transpire between episodes.