Man, as much as I'm steadily getting into the idea of BN (I thought the first issue, frankly, signified another pointless Geoff Johns killfest), I really, really wish that DC would take some pointers from Marvel in keeping the 'secret' elements of their big stories secret.
Since Nekron is likely the big bad of the Black Lanterns, in so much as he's like their Parallax or Ion, I'm guessing, shouldn't he have been blanked out or whatever?
That aside, I'm really starting to like the Black Lantern symbol. If you apply it to the confines of a circle, like the other lantern emblems, it's all consuming.