Blizzard sent out the following

 

The Darkening of Tristram and the Diablo anniversary event are now live! Whether you’re a series veteran craving nostalgia, or a newcomer hungry for your first taste of the franchise’s past, this loving homage to the earliest days of Diablo is for you.

The Darkening of Tristram Event  

 

  • Stop the Cultists

Your journey begins on the trail of a group of mysterious cultists causing trouble in Sanctuary. As you hunt them down in Adventure Mode, you’ll uncover clues leading to a portal into Tristram’s past, and the terrifying darkness that took hold of the town so many years ago. . . .

 

  • Explore the Cathedral

Follow the clues and you’ll soon find yourself in a realm of glorious RetroVision™, where an all-too-familiar cathedral looms. Explore the depths and you’ll discover familiar enemies and iconic items, all brought to life in the Diablo III engine. Meanwhile, deep beneath the catacombs, the Dark Lord himself awaits any intrepid adventurer who dares to challenge him. . . .

 

  • Discover Precious Loot

What is a Diablo game without shiny new loot to call your own? Completing activities in the anniversary event yields unique transmogrification effects, achievements, portraits, pets, and more. While some rewards are easy to find, others may have you scouring every nook or unlocking every achievement before you can get your hands on them. Can you earn them all? There’s only one way to find out!

 

Exclusive rewards and challenging enemies await you, but they won’t last forever! The anniversary event live now and ends January 31st at Midnight. Enter the dungeon, reap your rewards, and survive the evils within—or die in the process, never to be heard from again. . . .

Will you be checking this out?