By that means, AMD GPU user running steam per example should replace lib32-amdvlk with lib32-vulkan-radeon on existing steam installs, lib32-amdvlk is removed from Archlinux repo now.
Indeed same counts for amdvlk package what should get replaced with vulkan-radeon now.
That’s what i understand so far about, if anyone can add some info just .. do it 
see here too:
Archwiki is suggesting the same for AMD and vulkan usage too: