1272887:On the main page of Potomac Distribution, they have an announcement that Souls of Vengeance was cancelled.
From the Blog dated 10/6/09: "We found out today that Upper Deck has canceled its upcoming World of
Warcraft Miniatures expansion, Souls of Vengeance. We are uncertain
whether this signifies the end of the WoW Minis game, but that
certainly seems likely."
I talked with John repeatedly this weekend and was assured that they are five sets ahead and that Souls will certainly be coming out VERY early in the new year.
Also, for what it's worth, Potomac didn't carry any of Zendikar (MTG's new set) and won't be carrying MTG anymore apparently. That's not a good sign for Potomac, and their new decree might be more a personal reflection of business rather than a reflection of UDE's future.
EDIT: LOL. That post about SoV being canceled was posted on Oct 6th, two days before Worlds. Pretty sure that if it were canceled, we all would have heard about it much sooner. LOL.