"Maia" is the codename for IntelliJ IDEA 9.
Download IntelliJ IDEA
IntelliJ IDEA 9.0 final has been released. You can download it from http://www.jetbrains.com/idea/
Download IntelliJ IDEA Ultimate EAP
IntelliJ IDEA Ultimate 9.0 Release Candidate 1 (build 92.105), released on Dec 7, 2009:
This EAP build includes a 30-day time-limited license that can be used even if you have already used an IntelliJ IDEA evaluation.
Plugin Development Kit: Since the open-source Community Edition was released, we no longer provide the plugin development kit as a separate download. Please see http://www.jetbrains.org/display/IJOS/Writing+Plug-ins for instructions on setting up a plugin development environment.
Download IntelliJ IDEA Community Edition EAP
IntelliJ IDEA Community Edition 9.0 Release Candidate 1 (build 92.105), released on Dec 7, 2009:
Old versions of the TeamCity plugin are incompatible with builds 10762 or later. If you're using the TeamCity integration, you'll need to get the plugin from TeamCity 4.5.5 or the forthcoming TeamCity 5.0 EAP build.
Release notes for build 92.105.