6.14 release.
The staging-tkg build includes experimental AMD FidelityFX Super Resolution (FSR) support. Since it's experimental (for now at least), it might not work on all games.
FSR is disabled by default and can be enabled with WINE_FULLSCREEN_FSR=1 environment variable. The sharpening amount can be adjusted with WINE_FULLSCREEN_FSR_STRENGTH=5 (from 0 to 5; 0 is the maximum amount of sharpening, 5 is the minimum and is the default value). For this to work you need to enable fullscreen mode in game settings and choose lower in game resolution than your display's native resolution. At the moment this feature works only with Vulkan (including dxvk, vkd3d and games with native Vulkan renderer).
You can find more information about this FSR implementation here.