Just got back from the conference. Awesome stuff especially on BDC, enterprise search and office integration. SharePoint 2007 is really shaping up to be a concrete infrastructure for enterprise level software development with a huge amount of features out of the box. As it is with any product it also has a long way to go to become mature in different aspects but what is currently offered in BDC (business data catalogue) & enterprise search will immensely simplify portal & enterprise intranet development even when collecting and retrieving data from legacy apps.
Will try to blog some more on the topic tomorrow once the conference is over.