As promised, the downloadable add-on Danse Macabre for Heroes VI has been released today, with the legendary hero Sandro at the center of the events. At the same time, the Might & Magic Heroes VI Gold Edition has also been released, which includes the original game with two downloadable add-ons. The Russian versions are now available for purchase on Steam: Danse Macabre for 249 rubles, and Gold Edition for 599 rubles. New screenshots can be viewed on Steam (see previous links), and the trailer can be found on YouTube.
P.S. "Buka" has postponed the release of its "gold" version, titled Might & Magic: Heroes VI. Chronicles of Heroes, until October 4th.