This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
... similar reasons & usage as in projects
http://java.netbeans.org/projects/openissues/incompatible-api.html it's also listed from projects issues page on http://projects.netbeans.org/openissues/incompatible_issues.html
As described in http://www.netbeans.org/servlets/ReadMsg?msgId=619519&listName=nbdiscuss the current work on projects prototype has been stopped. Marking issue as VERIFIED --->
---> CLOSED
Reorganization of java component