Actually the black edition v2 was up for only around 24 hours. He's out again.
Looking closely, I don't think there are any actual upgrades, other than the block in the deck and the 510 seal also being black in color.
The airhole looks to be the same size as all the other Tobeco v2 clones, which do have a much larger airhole than the standard Tobeco clones.
Taken directly from the eBay listing:
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V2 UPGRADES:
REDESIGNED 510 PIN!
UPGRADED INSULATORS!
UPGRADED THREADING!
AIRFLOW EXPANDED TO 2MM!
ADDED FULL SIZE M TANK!
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Examining the new pictures closer, the 510 pin appears to be the same 2-pc design found on all Tobeco v2 clones (black/silver/super mega onyx diamond edition/etc).
The upgraded insulators just appear to be black in color, over your standard white.
Not really sure how the threading can be upgraded, I guess better machining, but the v2's already have good threads.
The larger airhole seems to be the big question here, but judging by the pics, it looks to be the same size and placement as all Tobeco v2 KFL+ clones.
With that said, you now get a full size M-tank with your purchase at the same price as the "v1" black edition. I bought two before, so I don't see any reason to not buy this one, I just don't think much was actually upgraded here. In my opinion, all the Tobeco v2 clones are worth the price he is asking.