I may. I actually bought my PS3 specifically for Demon's Souls. While it's unforgiving nature wasn't exaggerated in the online talk, it's weak points were highly glossed over. It was very grindy, and no way to turn off the 'inspired by griefers' multiplayer other then dying (and losing half your max health) or pulling the ethernet cord from the console. Plus, despite all the "It's rough but fair", it's not always fair. Camera screwjobs do exist, a bosses having level draining abilities stopped being acceptable exactly 2 seconds after it was invented.
Plus, some of it was brutal but fair - while at the same time being completely and totally unfun. The entire swamp level was like that - more aggravating then challenging.
So, I'm kind of mixed on it. The original was a good game - but while it deserved a lot of praise, it deserved much more criticism then it actually received.
I'll probably pick it up at some point - after a price drop or three.