JetBrains decided to release next version of their IDE as an open-source so the version 9 would be available in two different packages. Free Community Edition for J2SE development and commercial Ultimate Edition with J2EE and other technologies support. You can check the edition comparison table here.
New beta version of developer IDE with version number 2.7 is available for download on official site – you can check the list of the changes and new functionality on their wiki.