So this is a pretty big deal considering the PC scene mostly seems to be going the opposite direction with more launchers and exclusives than ever. It sounds like its rolling out slowly over time but I approve of any softening of exclusivity. I wonder if this will boost Apex even more if such a thing was possible.
This also says EA access will work with Steam as well but doesn't really give much detail on how that will happen just yet.
The Fallen Order steam page also seems to have Origin listed as a requirement so it'll probably be Ubisoft style where uplay is running underneath it also.