https://www.pcgamer.com/hollow-knight-lifeblood-update-is-now-available-in-public-beta/

Hollow Knight will get a new update soon, but if you're keen to get aboard early you can partake in a public beta right now. In addition to a few fixes and tweaks, the Lifeblood update introduces a brand new boss, dramatic upgrades to an existing boss, and the ability to use map markers on the game's sprawling in-game map.

Elsewhere, There are "numerous game balances and tweaks" as well as various bug fixes, optimisations and performance enhancements. "This is a major update to the game that includes a lot of back-ported tweaks and fixes to bring it in-line with the Switch version we've been working on," the update notes read.