Plone's version control, issue tracking, and documentation have been retooled.
To file or view an issue please visit the Plone Issue Tracker on GitHub.
Plone documentation — how to install, manage, use, and develop for Plone — is available at docs.plone.org.
However, if you want to contribute to Plone Core you'll need to read our Process for Plone Core Development first.
The old static version of dev.plone.org, including old PLIPS and open issues, can be downloaded from archive.plone.org.