Even though we are all currently very excited about DrupalCon Boston 2008 the Drupal Association is planning ahead to help coordinate the following DrupalCon for the Fall/Winter of 2008 in Europe.
Drupal 6 has been in a code freeze for more than 6 months and is almost ready to be released now. We're only a few bug fixes away from the first final Drupal 6.0 release.
Several Drupal developers are meeting February 4-6, 2008 in Chicago to work on and re-design Drupal's core data architecture. Topics will include data APIs, object modeling, fields in core, and an overlapping swirl of related ideas.