Drupal 4.0.0, 2002-06-15
------------------------
- added tracker.module:
    * replaces the previous "your [site]" links (recent comments and nodes).
- added weblogs.module:
    * this will ping weblogs.com when new content is promoted.
- added taxonomy module which replaces the meta module.
    * supports relations, hierarchies and synonyms.
- added a caching system:
    * speeds up pages for anonymous users and reduces system load.
- added support for external SMTP libraries.
- added an archive extension to the calendar.
- added support for the Blogger API.
- themes:
    * cleaned up the theme system.
    * moved themes that are not maintained to contributions CVS repository.
- database backend:
    * changed to PEAR database abstraction layer.
    * using ANSI SQL queries to be more portable.
- rewrote the user system:
    * added support for Drupal authentication through XML-RPC and through a Jabber server.
    * added support for modules to add more user data.
    * users may delete their own account.
    * added who's new and who's online blocks.
- changed block system:
    * various hard coded blocks are now dynamic.
    * blocks can now be enabled and/or be set by the user.
    * blocks can be set to only show up on some pages.
    * merged box module with block module.
- node system:
    * blogs can be updated.
    * teasers (abstracts) on all node types.
    * improved error checking.
    * content versioning support.
    * usability improvements.
- improved book module to support text, HTML and PHP pages.
- improved comment module to mark new comments.
- added a general outliner which will let any node type be linked to a book.
- added an update script that lets you upgrade from previous releases or on a day to day basis when using the development tree.
- search module:
    * improved the search system by making it context sensitive.
    * added indexing.
- various updates:
    * changed output to valid XHTML.
    * improved multiple sites using the same Drupal database support.
    * added support for session IDs in URLs instead of cookies.
    * made the type of content on the front page configurable.
    * made each cloud site have its own settings.
    * modules and themes can now be enabled/disabled using the administration pages.
    * added URL abstraction for links.
    * usability changes (renamed links, better UI, etc).
- collaboratively revised and expanded the Drupal documentation.

Drupal 3.0.1, 2001-10-15
------------------------
- various updates:
    * added missing translations
    * updated the themes: tidied up some HTML code and added new Drupal logos.