What it says is this, July 30 -- Side Quests landed on Disney+ and Hulu, the studio announced a second season of 20 episodes at San Diego Comic-Con on July 24. In streaming years, that timeline borders on instantaneous, and it says something more pointed than a routine renewal.

Disney does not regard the show as a nostalgic courtesy to the Cartoon Network era. The studio is treating Adventure Time: Side Quests as the foundation of a franchise property it intends to keep building, and the Comic-Con setting for the announcement was not incidental. SDCC is where entertainment companies send the signals they want people to remember.

Season 1, comprising 20 episodes that debuted June 29, immediately topped the Disney+ US charts. Streaming vi...