Ron Moore talked to Alan Sepinwall recently about Caprica and tons of Battlestar related stuff. The full interview is available at NJ.com. Here are a few snippets:

(on Caprica's themes and narrative style) 

It's hard to say. The comparison I used to keep making was "It's a sci-fi version of 'Dallas.' But the deeper we get into it, it's not. It's so different in tone and style to what we did on "Battlestar." If you just watched and didn't know the other program or didn't know what the connective tissue was, it wouldn't feel like they're part of the same family. They're very different stylistically. This is really a character piece and a drama that's very political. It has a lot of religious issues too. There are terrorists and terrorists bombings, religious strife... In "Galactica," we talked about monotheism versus polytheism; in "Caprica," those ideas are just starting to percolate.

(on prequels being tricky) 

I mean, we could have done another Battlestar, or the first Cylon war, but those would have been repeating things we had done. Remi Aubuchon had come to the studio with an idea to do something unrelated to "Battlestar" about robots and artificial intelligence and the creation of life, and when we started talking together, I got interested in the idea of doing a sci-fi show that was set on a planet, did not have an action adventure component to it, is even more of a character piece than "Battlestar," where it really has to live and die on its characters and its story without the Cylons attacking every week. Could you sustain a science fiction show in that kind of context? That's what got me excited.  

(on the lack of space battles) 

Science fiction in general is very heady intellectual stuff. The novels are a broad range of material -- there's some action adventure, and then there's very talky, sophisticated stuff. If you're a fan of the genre in general, I think you'll like this flavor of it... Surprisingly, this could be the one that sparks to a female viewership. There's always been a much higher male demo on "Galactica," because of the action adventure, the hardware component, and we think the character material might bring in more women.