A Reddit thread has confirmed the existence of Microsoft’s DirectStorage API in the Diablo 4 beta. This revelation was found in the game’s internal files where a direct storage DLL file was found. If this isn’t chalked up to a mishap by the developers, Diablo 4 could see some massive loading time improvements in the future thanks to Direct

Source: Hot Hardware – Diablo IV Data Mining Teases DirectStorage API Support For Hella-Fast Load Times On SSDs