EA Access is confirmed, GFNow is all but confirmed, Uplay+ is the one that I can see releasing next due to the not THAT impressive numbers from that service.I wonder how far down the rabbit hole Valve will go with this cloud/subscription thing.
Because at some point you might as well just let all of them on Steam.
XCloud
Gamepass
PSNOW
EA Access
UPlay+
GFnow
Throw Stadia and HumbleBundle into the mix too lol
But anyway, Steam is atm like a bridge to connect all the services possible, that's the main objective, be the main hub.