That's right, two! Dos! Deux! You buy one on CD, and you get a download code for the other, which is pretty cool, although I would prefer CDs for both. The albums were reportedly recorded live in front of a small studio audience. 20 songs total, 19 originals and a cover. They're out September 1.
More info here. I've said this before and I'll say it again, the Black Crowes are the best rock 'n' roll band in the world.