If you’re a Diablo III player, then this new is for you. Starting tomorrow at 12:01 AM PDT / 3:01 EDT, Blizzard will be doubling the amount of caches you can be rewarded from completing a bounty. This update will apply to both the Horadric ad Bonus caches, so make sure you’re ready to knock out some bonus acts for that extra loot.
This applies to the PlayStation 4, Xbox One (Ultimate Evil Edition) and PC versions of Diablo III, while PlayStation 3 and Xbox 360 gamers will only receive a +100% EXP bonus and gold.
The double cache rewards will end at September 27 @ 11:59PM PDT / 2PM EDT.
Source: Blizzard