Yes! the first books about SharePoint 2010 are coming out! This is fantastic in order to check you’re already acquired knowledge against the content of these “references” and more import, to be sure that you are looking in the good direction and perspective.
Since the beginning of SharePoint 2010 beta our company was involved into a large sharepoint 2010 project. The main goal was migrating information from Confluence and IntraDoc into SharePoint 2010 + FAST. The nice part was a taxonomy of 10 levels deep and with approx. 6000 terms that needed to be migrated :-). All terms were in IntraDoc situated in a CSV file so writing a console app which translates it into a SharePoint 2010 complient import file was not that hard.
When I read the Term Store Boundaries paragraph in the new Wrox-book, i was wondering about the max depth level: only 7 levels deep. Probably just a mistake or typo!