Let me know if you (or anyone) notices any mistakes in the AotP stuff since I just recently entered the info and haven't completely proof read it yet. Next up ... spell cards.
For the more technically minded there is a
BUILD folder with some xml data and xslt code; which is all a work-in-progress and will be going through a lot of changes over the next couple of months.
BTW, the main site also has a
BUILD folder.