Ugh, this is a mess. I read the boxed version uses Games for Windows Live, yet it isn't listed in that category, simply the Games for Windows category, which is generally OK aside from us knowing it's going to be a cheap port. The official box has been released too and it doesn't have the "Live" tag on it nor a Steamworks notice (obviously something like this is subject to change, just saying). I read the steam version uses Steamworks, yet it's not listed to do so, it only lists as being sold on Steam. Another kink, there are a bunch of games that are Games for Windows (without the Live) that use Steamworks, like Rage for instance. So who knows, but I do know this, Steamworks is infinity greater than GFWL so hell yes, I'll be able to buy it, where as if GFWL I wouldn't touch it with a stick. I use to take issue with Steam, because I hate digital distribution but it's the standard anymore, and they're damn good in every area with it so they've won me over.
That said, the porters are leaving me worried. Apparently it's just going to be a straight port, no high-resolution textures, very little options, keyboard controls being cited as the unintended way to play the game, etc. The worst of it all? As if not properly supporting Keyboard and mouse controls, they are capping the frames and flat out said, do not expect the framerate in areas like Blighttown to be alleviated just because it's on the PC. The only hope for any of this is that since From aren't port heavy, they'll probably leave enough of the game's files easily accessible (due to ignorance or being lazy) for the community to fix it for them.
All that said, it'll be just as good at the least, with more content. Can't wait; August is gonna be awesome.