No, DX11 on pc will be on par with PS4 since the PS4 version is a direct port of the DX11 client, hence they will get released around the same time.
I highly doubt this will be the case, most likely there will be a big client update and users will be able to select from ingame options if they want to run DX9 or DX11. So one universal client is what we will get.
