It's the usual Games for Windows Live for the time being
Bandai Namco has provided an update on the future of Dark Souls PC, which uses Games for Windows Live -- a service that's believed to be shutting down in July -- for its online play.
First, the game "will remain fully functional on GFWL for the foreseeable future." Second, Namco "is currently seeking avenues to continue support and ensure the functionality of Dark Souls on other services. We will have more news and updates to share on this in the coming months."
Presumably and hopefully, that continued support will come to fruition through Steamworks. I'm now starting to wonder if GFWL's end isn't being pushed back beyond July. Either way, Ace Combat: Assault Horizon ditched the service -- Dark Souls can and should too.
Bandai Namco Games America [Tumblr]