The game no longer uses GFWL. Could someone that owns the game go through and update all relevant information? Also, stuff like what happens to save games after the update, a note that the DLC is free for all previous owners of the game, check if SecuROM is still used. Just a general cleanup because of the update.
Topic on Talk:BioShock 2
I have read somewhere securom was removed, but I can't confirm it, and I'm still downloading the game.
According to the FAQ, GFWL saves will not transfer over.
All DLC except Minerva's Den is included with the game now, all Steam copies will have it.
SecuROM is gone, I determined it by running the Revoke Tool located here and ran the game, if SecuROM was active you would not be able to launch it, instead it would ask you to activate.
I've taken the liberty of doing this, some areas may still require clean up but it's sufficient for now.