"Act Your Age" is a canonical episode? Yeah. I'm not falling for it.
I won't spill the beans of what happened for those of you who haven't seen it yet, but this episode is as canonical as the Family Guy "Viewer Mail" episodes. In fact, the episodes from each show feature characters/creators answering questions from fans who wonder what would happen if certain scenarios played out in the series. In other words, it's strictly "fan service" and does not coincide with the principal narrative as the series progresses. If so, what would be the point of following the series if what occurred in the new episode served as a 20-minute (30 minutes if you include commercials) spoiler? It would mean every episode they would air from now on will be irrelevant.
It would be like if HBO aired a Game of Thrones episode where they flash forward to finale and covering the fates of the main characters who haven't been killed off yet and what became of Westeros when Winter finally came. Also, The Simpsons aired some "future" episodes, and I loved how they contradicted one another, so they all count as "What if" scenarios, hence the fates of all the characters will remain debatable until the (unlikely) finale. Any thoughts?
Also, for the record, I thought it was an enjoyable episode, and quite moving.