Read a 6 page article on this in the latest PC Gamer.
I think it looks amazing, very similar to the first, but I thought Bioshock was one of the finest games for some time so that's all well

. It had such an amazing atmosphere and such a ric feel to it.
In PCG it described how you're the original big daddy - a lot more intelligent and free thinking than later designs. You're being hunted by the 'Big Sister' whose aim is to steal girls from the real word and bring them back to Rapture to turn them into little sisters. She doesn't take to kindly to you interacting with the little sisters and makes your life hell apparently.
You also get to go outside and walk the bottom of the ocean, which will apparently be a non-combat zone. I'm quite looking forward to that - it might be nice to have a break now and then, Bioshock was pretty unrelenting hehe.
Nice video.