I've heard that 9600 is just a slightly nerfed 8800? Still, i have a 9600GT and am also interested in this.
I hear this game uses Xbox for Windows Live, but does it still have as strong DRM as the first? I think i've also heard that widescreen support was botched the same way as in BioShock 1?
The game uses a SecuROM-based disc check for the retail copy in addition to Games For Windows - LIVE's standard 15 activation limit per product key. It doesn't matter if you use the key on the same Live account multiple times, each time you enter it it counts as an activation. So, after 15 installs you'll have to call up Microsoft to get your product key reset. Fun experience, when I called MS to get my key for Fallout 3 reset I talked to two reps that didn't even know they could reset them, eventually being transferred to someone that was able to help.
You also can't save your game unless signed into GFWL (although you can just use an online profile, you aren't required to actually go online).
As for the widescreen fiasco, they had originally learned their lesson form BioShock and the correct FOV settings were implemented in BioShock 2, but while doing a last minute bug fix that was reverted and the game shipped with the same broken widescreen support as the first. 2K Elizabeth said a patch will be along shortly and came up with http://downloads.2kgames.com/cultofrapture/widescreen/widescreen_after.jpg demonstrating the post-patch widescreen support.