User blog comment:Dereviewer/A Show's End/@comment-24763540-20151005202514/@comment-24685871-20151006223555

Dude, even if Mabel did say Summer's almost over. She said "almost". And almost could mean like a month, which means there could be a whole new season. That's why I don't think the show's ending. Until Alex Hirsch himself says the show's ending, it's not. Plus, a popular show like Gravity Falls usually goes on for more than just two years. Like Phineas and Ferb, which was also a popular tv show. And it was had 4 seasons. Gravity Falls is actually kinda the replacement for Phineas and Ferb. I suggest you watch the trailer for the new episode again and see if they said it was the final episode anywhere in it.