As we get closure to launch, I am sure more things will be released. Just keep checking their web-site about this game.
I have faith that after World of Goo, this game will most likely be different (it isn't fun to always create the same game for developers), but I believe they will put out a very interesting/innovative product. As a consumer that is all I want.
The new Nintendo Power did an article on it. In a nutshell, the Sun is going out and causing a global cold snap. For heat, you're reduced to purchasing objects from mail-order catalogs, then burning them in your fireplace. The fun part seems to be seeing how each item burns, and setting up combos to earn the money to buy more stuff.