WordPress 2.01 was released 2 days ago. They had fixed about 114 bugs.
Some of the fixes/improvements:
» You can now specify an upload directory, and whether to use date-based storage or not.
» Caching has been fixed under certain PHP environments.
» Permalinks have been fixed for weird enviroments as well.
» XML-RPC uploading works.
» Compatibility with older versions of PHP.
» Several WYSIWYG fixes and cleanups.
» Imports now use much less memory.
» Now works with MySQL 5.0 in strict mode.