The three one is for Europe (And maybe elsewhere, I only know it's for here for sure), the two one is for America, which is why they've most likely dumped all the black star promos from both kinds, as they won't be available everywhere from now on. (The single + sample packs with the BS promos seem to be heading everywhere)
Of course that begs the question of why phase out of the promo cards in favour of set reprints when they're just going to make the generic reprints available everywhere in either form anyway.
I guess this what the TPCi member on Gym meant by "moving up the product line", but I really don't see how this benefits anyone. The old triple + new BS promo deal was far better, and now no-one gets it.