“Defeat all bosses (more to come soon)”
Official badge description, in the game since 2026-09-21
That parenthetical is the strongest forward signal in the game: the developer wrote, in official badge text, that the five-name boss roster (Gravemaw, Undergnaw, Rotmaul, Broodwidow, Ashwing) is not finished. When the next bosses ship, history says they will arrive with defeat badges of their own — the September 21 wave added five boss badges in a single day, and badges are this developer's consistent public fingerprint.
The release pattern backs a "soon, unannounced" posture: June launch, July mystery badge, August daily rewards, September's sixteen-badge milestone wave, an October with five API touches (gun mastery on October 3, the save-rule wording change on October 8, a silent touch on October 15, the pumpkin marker's return on October 26, and a second silent touch on October 27), and a November that opened with the Christmas-event badge on November 9 and the pumpkin-marker-removal publish on November 10. Each shipped without a dated announcement. Checking after each publish — not before — is the only method the evidence supports.