The Arabized version of WordPress 2.5 was finally released a few days ago on the official site for Arabic WordPress.
This release brings all the new changes and features of WordPress 2.5 to the Arab blogger community, from the completely overhauled admin area and dashboard, to the new media gallery, automatic plugin download & update, multi-file upload, tag management, and the better visual editor, to the more technical additions and enhancements under the hood.
Upgrading from earlier versions should be quite straightforward using the upgrade script. Still, it is recommended to backup before beginning the upgrade.
This version can be downloaded from the official Arabic WordPress site.