We aren't the only ones speculating. I found this "Unofficial" site (keep that in mind). It gives the impression that it's a Lorraine Bracco site at first glance and has at the top of the page, "Consider this a spoiler page". I glanced thru some "unconfirmed" spoilers, and yet, have to wonder how did they get this info.

It does however have a trailer and photos and other info I haven't gone thru yet.

http://www.lbracco.com/sopranos6bpromos.htm

TIS

"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK

"War is over, if you want it" - John Lennon