The patches
1️⃣ Patch 1 — 11 September 2025
The difficulty pass: Moorwing and Sister Splinter slightly easier, Sandcarvers hit for less, some prices down, some rosary rewards up, plus fixes.
2️⃣ Patches 2 to 4 — late 2025
Mostly fixes, performance and translations, with some balance changes: Patch 4 made the Wreath of Purity last longer and eased the Muckmaggots.
5️⃣ Patch 5 — 16 March 2026
Version 1.0.30000 by Team Cherry’s post (Nintendo Life gives 1.0.29926), PC first: Traditional Chinese, a reworked German translation, Silk Soar through top scene exits, enemies unstuck from out of bounds. Team Cherry called it the last significant update before the expansion.
Sea of Sorrow
🌊 What it is
A free expansion announced on 15 December 2025 with a Team Cherry blog post and trailer: a voyage across and beneath salt-stricken seas, with new areas, bosses, tools, NPCs and wishes.
📅 When
2026, no date. The wiki’s reading is that it restores cut content — a bay, a lab, a submersible — but only the title is confirmed. This page changes the day Team Cherry names a date.
💰 Cost
Free on every platform the game is on.
Still to verify
Cross-checked on 17 September 2026 and re-checked on 25 September 2026 against the Hollow Knight Wiki, the patch reports of Nintendo Life, GameSpot and GamingOnLinux, and Fextralife’s patch notes. What is still unverified is the only thing reading cannot settle — nobody here has played it.