Moving from PC launcher to Steam version and have a question about uninstalling

[LaylaTsarra]

No, you'll only be able to launch the game trough Steam (which will launch it trough their verification servers first). There is currently no way to do this manually and I doubt there will ever be a way.

I'm running a PC (non Steam) version of FF now using the Steam launcher. There is the option to run other non Steam games as well. So you're saying this update will affect that ability or will that apply just to Final Fantasy XIV Steam owners?

They've not said that.

All they have said is that Steam users will need to start the game from Steam. They've also said non-Steam will be unaffected if they launch the game from Steam

I hope this is the case. I guess we'll find out as you say in a couple weeks.