Calling for heroes around the world,
To fight a force without remorse ,
But will you answer your call to arms,
Or just hide at the inn and play some cards?

Patch 3.0.1246 - The Argent Crusade Notes:

Introducing Tournament Mode! Go against players from all over your region to answer your call to arms and win more Blizzcon points by placing top on selected tournaments.
The Removal of Casual Mode but don't worry! An all new Tournaments Mode will be waiting for you on August 23rd.
Board Customization! Purchase cosmetic board plates to crush your enemies in style!
New Cards! This all-new patch brings 63 new cards which will all be acquired through Tournament Mode or by purchasing a new type of pack which includes Classic, Goblins vs Gnomes and the all new Argent Crusade cards for only 150 gold!

Paladin Hero Sunwalker Dezco is now available for purchase.
Rogue Hero Wrathion is now available for purchase.
Shaman Hero Drek'thar is now available for purchase.

You can now choose which pack reward to obtain through the Arena.
The Argent Crusade game board has been added exclusively through the Tournament Mode.
Bug Fixes:

Various cards have been fixed to properly work with Chromaggus.
Fixed various graphical and sound bugs.