The folks at Blizzard have taken it into their hands to update the eons-old, but still running strong, World of Warcraft. Some back-end improvements have been made, and were essentially lost within the latest patch notes - as in, not even mentioned - that included this update to the latest API. The game now supports DX11 and DX12, but there's a caveat - only AMD users should use the DX12 implementation. Players using an NVIDIA graphics card will see an immediate performance hit from going to the more modern renderer. For now, the change is virtual - there doesn't seem to have been any particular work for performance improvements.Other changes include ditching Exclusive Fullscreen (now only windowed and borderless windowed modes are available), improving the cinematic renderer for 21:9 ratio support, and changing graphical options. The performance presets of low, medium and high have been swapped with 1-10 sliders (a change prior to this patch), which allow for more granular control of graphics options - and improved performance, since more rendering variables are now affected. The game really does run extremely well nowadays, however; it seems a little counter intuitive to devote the resources to add DX12 support for barely any real improvement, so this could be the herald of future changes.