Smart groups haven't been fully implemented yet when every other info manager has them? This beta is buggy (as one might expect): I imported my DTP database, and after using it for a while, DTP 2 pretended that it needed to be updated again!

More importantly, unless you're sold on the "AI" design of this, DTP 2 is really too late. What people want is for their notes to be available everywhere, on their desktop, the web, and their iPhone. Evernote offers that now.