That would be cool, but no way in hell are we going to get that. A part of me thinks that they definitely WILL honor the R-ratedness of the album and musical, because that's how the story is meant to be told, and with Billie involved how could he consent to letting his "baby" be Disneyfied too much. On the other hand, he and MM and all the producers might agree that it's in the best interest of the film, to get this somewhat diluted message out to a younger audience, to try to make this movie PG13, when push comes to shove.
Rent has a lot of "fucks" in the soundtrack and it's about AIDS, heroin, depression, etc, and they managed to make that PG13 and I think it was a good idea because it meant my life was able to change from being exposed to those messages at age 15. So as truthful as it would be to make American Idiot as adult-content as it should be, maybe in the grand scheme of things it wouldn't be the worst thing in the world to tame it down a little and give a brand new generation of teenagers a chance to go see a movie with music that can change their lives.
Besides, I think the trilogy distracted us from just how little cursing is actually on the American Idiot album. Pretty sure he says fuck five times on the whole album. And as emotionally true as "I HATE MY FUCKING LIFE!" would be, I would hope that the screenwriters could come up with perhaps some more interesting dialogue than Billie Joe himself tends to lean toward
On that note, wasn't Dustin Lance Black going to write this? Because if that pans out, what a dream team.