Take this with a huge grain of salt, it's just a rumor right now.  But there are claims that SS2 will appear on GOG.com soon, with a Steam release to follow later.

http://www.gog.com/forum/general/system_shock_may_be_coming_link/page1

It's just SS2 for now.  No SS1 in sight.

One thing I found interesting is mention that the version of SS2 being released is a "port".  Meaning what, exactly?  Did they just do the minimum to get SS2 running on modern machines, or more than that?  I doubt they used any NewDark code.  In fact, if anything, this release may complicate patching the game with NewDark.

it's no secret that they were trying hard to get the rights. fingers crossed. as for complicating the patching, no, unless they are going to encrypt/mess up the resources.

I wonder what the release will do to the server ... I hope you prepared for this, Kolya.

Who knows, maybe this guy is Le Corbeau.
On second thought...

I'm sure they will try to sell a working game, that is they will use New Dark straight away, if they actually got the rights.