Would you mind terribly if I told you about a game that's out and you can play now? I realise this is the week for announcement and so very many trailers for games you won't get to play for at least four months but, look, I'll give this a try and well see how it goes.
The decks are themed around Ragnaros vs. Nefarian, themed around the characters and packing a fair few fancy rare cards. Nefarian is stronger early on, while Ragnaros has a better late-game. Which deck you play is decided as random, which does upset folks complaining that Nefarian's deck is stronger.
Tavern Brawl has just opened up in Europe, is due in Americas real soon. The mode will be available for a few days every week, closing down and reopening between types of Brawl.
"One week might feature preset decks, while another week could have you crafting a brand new Tavern Brawl deck following specific guidelines, while others might offer buffs to specific minion types," Blizzard say.
It'll run according to this schedule:
Europe: open Wednesday 5pm CEST, close Monday 6am CEST.
Americas: open Wednesday 10am PDT, close Monday 3am PDT
Taiwan/China: open Thursday 3am CST, close Monday 6am CST
Korea: Open Thursday 4am KST, close Monday 7am KST
The first few weeks of Tavern Brawl will give people a free card pack for their first win.