They put out some postcards with some super-cool art, and as soon as we can find the card for Azorius we’ll get that one up as well.
Just got back from the Return to Ravnica party at PAX 2012 in Seattle. We’re going to have to apologize for the picture quality. Take a look and let us know what you think!
Keep in mind there were many more cards displayed and this is just a taste of things. At there are also a few Gatecrash previews. Favorite card of the night was an artifact which cost 3 and read something like “All lands you control gain TAP to add one mana of any color” in addition to “TAP add one mana of any color” for the artifact itself