This mod replaces either the Signature Suit, Freedom Phantom Suit, Or Futo Suit with the unreleased Solstice Suit. See images to see what that is.
How to download mod: Choose the RPKG of your choosing, and rename it to chunk0patch25.rpkg. Then, put it into the "Runtime" folder inside of the HITMAN3 folder. You will find that folder where HITMAN 3 is downloaded.