I was at Kroger a couple of days ago, and saw a new issue of the Phineas and Ferb Magazine. In addition to the normal part, flipping it brought information about the movie. I didn't buy the magazine, but here's what I remember:
- Heinz Doofenshmirtz (2nd Dimension) got his scar from Perry the Platy-borg (the doctor ordered him to salute while too close; it was a comic that explains how Agent P became leader of Doof's army).
- There are no Fireside Girls, just Firestorm Girls (I don't feel like changing the page name because somebody might revert it.
- When Phineas and Ferb got Perry 5 years prior to the movie, he received a locket with photos of all three of them (both were revealed through a quiz, but it doesn't spoil the plot).
- Tri-Stone Area is going to go through multiple eras, and Phineas and Ferb will interact with Doofenshmirtz a bit more.
- Another episode is coming. In it, we find out that Mom's pies are made with doonkleberries, and for some reason (she ran out?), everybody goes to Drusselstein (this may be Road Trip, but I don't think so, since that one was also mentioned in the interview).
Ok, that's it. Debate, or whatever, below (and if somebody could tell me when the page has been renamed, that would be great).
UPDATE: Thanks for the comments. I forgot one thing when writing this: there was also a memory card based off of Brand New Best Friend, including the two Doofs wearing the Summer All The Time Collection.