In today's Developer Update Livestream, Blizzard detailed several pieces of new content coming to Diablo 4 in Season 5, including the new Seasonal Reputation, Seasonal Questline, and Hellbreach Dungeons!
Developer Update Summary Diablo 4 Season 5
As in previous seasons, Diablo 4 Season 5 will have players gaining ranks with a new Seasonal Reputation, The Mother's Gift. However, unlike previous seasons, this time players will earn reputation by defeating powerful servants of Hell nearly anywhere in the game — Helltides, Infernal Hordes, Strongholds, etc. Alongside better accessibility to reputation, earning reputation now grants players a bit of Experience to help facilitate the leveling process.
Additionally, Seasonal Quests will be unlocked periodically as players progress through The Mother's Gift Ranks — Quest Ranks are indicated by a green exclamation point, as seen above. Just like in Season 4, Progressing through Seasonal Reputation Tiers will grant cultivated Unique and Legendary items tailored to a specific class build, and the final Tier rewards players will earn a Resplendent Spark.
The Season 5 storyline is two-pronged, and includes both a Seasonal and a non-Seasonal Questline — Of Lambs and Wolves and The Eyes of the Enemy. Blizzard has stated that this is to ensure that Eternal characters will be able to unlock and experience the new Infernal Hordes game mode.
Of Lambs and Wolves is the Seasonal Questline, and is only available to Seasonal Characters. This questline is the first part of the Infernal Hordes storyline, and will see the player working to become more powerful before taking the fight to Hell in the Infernal Hordes. As mentioned above, players will progress this questline alongside the new The Mother's Gift reputation.
The Eyes of the Enemy is a new questline available to both Seasonal and Eternal characters, and is the second part of the Infernal