Is this the last season of the Sopranos? I would suspect that if they were going to kill off Adriana, they would pull a whole secretive ad thing, like "One of the most well known Sopranos cast is going to bite it", and everyone will get all nervous its Tony, etc. I'm surprised they haven't caught up with her yet-see how fast last night's rumor spread?
I stopped watching the Sopranos last season because it stopped being great for me. Last night brought back the shock value of the series for me.