Update (Saturday): It was Eddie who broke the news, and he used the phrase "joined the cast". That means several episodes, hopefully.
Eddie and Luciana did a Battlestar Q&A at Wizard World Chicago Comic-Con this Friday.
Tweets cjcubs: "Luciana Carro is going to be on Caprica. Only BSG cast member to be on there."
Says me: *speechless*
Oh my gosh. We may or may not hear more about this stunning news, and I plan on updating our blog's Caprica post throughout the weekend.