The TikiWiki Content Management System “Sirius” Version 1.9.0 has been released, and is now available for download at Tiki is a massive full-featured, widely deployed and actively developed web application. Before proceeding to upgrade to 1.9.0, you should make a backup of your site. If you run a high-volume site, consider running a test site in parallel as there have been reports of increased sql queries. Similarly, if you run a site and are concerned by security, you may want to wait for 1.9.1. As with any open source software, 1.9.0 is provided as is. It is the results of over a year of development by over a hundred volunteers. Tiki 1.9 introduces over 400 new features & enhancements, options, modifications & bugfixes. The next versions 1.9.1, 1.9.2 will focus on stabilizing and bug fixes found after 1.9.0 release. Please report any bugs (and if possible the solution) to