Wait - you do realize that the first example you gave was a valid proof of my point, right?
Yes, I do realize.
I used that as an example when your theory is correct. It would be correct more often then not in this case also (Series B) "if the decks are identical". My point is, I don't think Series B is identical. Similar but not identical.
We can look at another example. The first Magic Con decks (can be debated) have value in there own right. The addition of another Magic Con V2 (2012) certainly helps establish the value of the first Magic Con Deck. The creation of the 2nd is evidence of success of the first. "Not identical" but another version of the same premise.
They are named "White Lions" for a reason. They will continue to use the primarily white back with blue print. The difference will be a swap from the continues split spade logo to a continues NEW logo. It should use a blue metallic ink. David Blaine decks have never used metallic inks before but this would be more reason to use it now rather then not.
The Magic Con decks are a terrible example. They both were made as a commemorative item for an event - only small quantities were ever intended for retail sale. A better example would be all three releases of the Split Spades - Tally-Ho, Bee and Lions:
Tally-Ho - red, blue, black.
Bee - black, inverted black.
Lions - inverted black, inverted blue, red.
The man likes to do inverse versions of his cards. It's not beyond the pale to imagine he'd do so with Series B.
As far as your speculation regarding the deck, there's no way Blaine is abandoning his "db" split-spade logo. Not only is it on all of his merchandise, he uses it when personalizing an autograph. I watched him sign an uncut sheet and a Variety Box right in front of me, and he wrote "To Don, God bless" followed by an autograph - and the "d" in God and the "b" in bless are in the shape of his split spade logo! It's his brand, his icon - it's not going away any time soon. (Look in some of the older topics and you can read about the night I spent hanging out with him and his creative team in his Manhattan office.)
Metallic inks negatively affect the card's performance, so I don't see him using any. Nowadays, anything with metallic ink also has Magic Finish (or as Ellusionist calls it, "Performance Coating") to counteract the negative impact of the metallic ink. It's why CARC made their most recent Erdnase deck, Black and Silver Acorn Backs, using Magic Finish for the first time, despite the boxes listing the finishes as "Cambric" and "Ivory". Some think Magic Finish is the best thing since air, while some think it's too slick to be of use to them - and a lot of people have opinions somewhere in the middle.
If he does or doesn't do an inverted back design, I could see him doing something with new gaff cards, changing the box and card reveals and/or improving the marking system he used on the card backs, but metallic ink would be a stretch.
