Here are the Diablo 4 Patch 1.1 patch notes

Patch 1.1 is a major update early in the life cycle of Diablo 4, the massive hack-and-slash action role-playing game. This significant update will launch a few days prior to the start of the game’s first season, Season of the Malignant.

This patch is a massive one, prepping the game for the Season of the Malignant launch scheduled for July 20. In this season, players will be tasked with tackling a new Malignant corruption that’s affected the monsters scattered around Sanctuary, and defeating them will allow players to pick up new socket-able Malignant Hearts.