Icy Veins on Twitter: "The 16th anniversary buff on live servers increases your reputation and experience gains from quests by 15% instead of 16%. https://t.co/dqK0PRO8Vm #Warcraft… https://t.co/DMT2OVV2bx"
It's been said before, the buff UI needs to be fixed ~ Diablo III news and guides
Diablo 3 Anniversary Buff to be Permanent
Enlightened Shrine - Diablo Wiki
Diablo III's birthday buff proved so popular that Blizzard are keeping it | PCGamesN
Diablo 3: (Not A) Cow Anniversary Event and Ideas - Kontroversial Keith