Ok it's been out on the internets for a little while thanks to TV screener DVDs, but it's being broadcast tonight on Sci-Fi. I have seen it already, and I must say it has definitely whet my appetite for the final season! If you haven't seen the seven 'flashbacks' with a young William 'Husker' Adama, they offer a big clue into what's going on, as well as some big clues into why the cylons signed an armistice and what they were up to for 40 years afterward.
BTW, it's got some great combat scenes and we get to see more of the initial attack on the shipyards where Cain had to order a blind jump. We also get to see the old cylons as well.