Sinatra 0.9 is out. Thanks to the leadership of Ryan Tomayko, and a very active group of hard-working community contributors, Sinatra is making the transition from a cool hacker’s toy and into a mature framework, ready for production use. Much of this release has to do with stability and maintainably (such as a deprecations system), as well as outreach like improved documentation and bug tracking. Expanded documentation is on the way, such as the Sinatra book. This is an exciting time for what will soon be the #2 most popular Ruby framework.