Blizzard has now launched Diablo 3 patch 2.4.3 on the PTR.
This update gives players the opportunity to test the Diablo 1 2th Anniversary event ahead of its proper launch in January. This will be an annual event where players take on the original Diablo 1 dungeons.
The patch also brings some new quality of life changes including the Mystic now having all dyes, new Adventure mode bounties, changes to Great Rifts, and more.
The full patch notes can be found here.