Yesterday the Mambo Development Team announced a new roadmap to the upcoming version 5.0. Currently it is planed to released 4 maintainance releases untill the first alpha release of Mambo 5.0 will be available. Here's a short overview:

• 4.5.2: Will come next week. This release will contain some bugfixes, the patTemplate engine (see www.php-tools.de) and some improvements to file permissions.
• 4.5.3: Will come in March. Contains bugfixes, support for Admin languages (finally!) and the ADODB database abstraction layer.
• 4.5.4: Will come in May. Contains bugfixes
• 4.5.5: Will come in June and also bring bugfixes
• 5.0.0 alpha: Planed for mid 2005. Will contain numerous new features such as better rights management, multilanguage content, unlimited folders instead of section/category system and a simple workflow engine.
• 5.0.0 final: Planed for end 2005.
• 5.1.0: Planed for 2006

Detailed informations can be found over at the official Mambo website:

• www.mamboserver.com/menu/Mambo_4.5_and_5.0_Roadmap/