After a successful Season 4 that put the game in the best position it's been in since launch, Diablo 4 is gearing up for Season 5. Known as the Season of the Infernal Hordes, Diablo 4 Season 5 is set to begin on August 6 and last until the Vessel of Hatred expansion ushers in Season 6 on October 8. Despite the shorter-than-average season length, there appears to be a lot for Diablo 4 fans to get excited about in Season 5, even being sandwiched between the exceptional Season 4 and the exciting Vessel of Hatred expansion.