Fixed Content-Language HTTP header to not cause issues with Drush 5.x.
Reduce memory usage of theme registry (performance).
Fixed PECL upload progress bar for FileField
Fixed running update.php doesn't always clear the cache.
Fixed PDO exceptions on long titles.
Fixed Overlay redirect does not include query string.
Fixed D6 modules satisfy D7 module dependencies.
Fixed the ordering of module hooks when using module_implements_alter().
Fixed "floating" submit buttons during AJAX requests.
Fixed timezone selected on install not propogating to admin account.
Added msgctx context to JS translation functions, for feature parity with t().
Profiles' .install files now available during hook_install_tasks().
Added test coverage of 7.0 -> 7.x upgrade path.
Numerous notice fixes.
Numerous documentation improvements.
Additional automated test coverage.
http://ftp.drupal.org/files/projects/drupal-7.10.tar.gz