A booklet included with physical copies of Hollow Knight: Silksong says the game’s world will expand through free content packs — and describes Sea of Sorrow as its first giant expansion, according to Polygon.
The wording surfaced after some players obtained physical editions ahead of their release this week. Polygon reports that a Reddit user shared photographs of the booklet from a Nintendo Switch 2 copy. It says the content packs will introduce new friends, new abilities and new ferocious foes.
The interesting detail is the combination of plural content packs and the description of Sea of Sorrow as the first giant expansion. That language suggests scope for more additions, but it does not establish how many expansions Team Cherry plans. Nor does it clarify whether the content packs are separate from Sea of Sorrow, so treating the booklet as confirmation of multiple additional DLC releases would be getting ahead of the evidence.
Sea of Sorrow itself is not a fresh reveal. As Polygon notes, Team Cherry announced the expansion around the end of last year with a broad 2026 release window. It will be free for players; the new development is the physical booklet’s broader wording about Silksong’s future content.
