The streaming of Blizzcon content is the 'product' (wink wink). Obviously they're selling us the pet, but the 'virtual ticket' is an excuse to charge $40, and also an excuse to sell it to us without properly describing the actual goodies.
Also, sadly, I just realized that the Grommloc/BC01's moveset is really lame. Dominance+Whirlwind *should* be a nifty combo, but it's not. Dominance 'increases the damage of your next attack by 100%', and this means it will only boost the damage of the first hit of Whirlwind (the frontrow hit), and not the 2nd and 3rd hits on the backrow. This is similar to how Supercharge+Quake works on Personal World Destroyer and Pocket Reaver.
*edit* it seems that Whirlwind has gotten the Avalanche treatment, ie it does 33 dmg split among opponents, rather than 11 to each opponent. 'Next hit' damage modifiers such as Dominance *should* affect all 3 hits of these 'split' AoE abilities. For example Rake reduces the damage of Avalanche against all targets, not just the first. Any AoEs that haven't been updated (Quake, Tidal Wave, Arcane Explosion for example) still only get the bonus on the first hit though.