Why am I telling you this? Not so you'll buy it (though that will come later), but because we need people to contribute!
So, here's a bit of what you need to know:
Firstly, anyone can contribute. Submitted works can include poetry and prose in addition to drawings, paintings, photography, etc, so don't feel left out if drawing isn't your strong suit - there are lots of ways to express yourself! The charity picked to donate to is the ASPCA, and as such the artbook will be featuring an animal theme (as only makes sense).
More thorough information (as well as the ability to join in) can be found at JessieQ's journal, here.